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Maybell Quantum has unveiled ColdCloud®, a patented cryogenic architecture designed to transition quantum computing from laboratory environments to industrial-scale datacenters. Unlike traditional dilution refrigerators that house all cooling stages in a single unit, ColdCloud centralizes the primary cooling power and distributes it to independent, modular nodes. This decoupled approach allows for cooldown times measured in [...] The post Maybell Quantum Launches ColdCloud® Distributed Cryogenic
QphoX has announced the commercial launch of its Quantum Transducer, a device designed to bridge the gap between microwave-based quantum processors and optical telecommunications infrastructure. This hardware enables high-fidelity quantum state conversion, allowing quantum information originating from superconducting qubits to be transmitted through standard optical fiber networks at room temperature over large distances. The product [...] The post QphoX Launches Quantum Transducer for Distribut
Riverlane has released a new Quantum Error Correction (QEC) technology roadmap, outlining a strategic path to accelerate the arrival of utility-scale quantum computing by three to five years. The roadmap details a series of engineering and scientific milestones designed to address the "avalanche effect" of data errors that currently degrade quantum computations. By implementing real-time, [...] The post Riverlane Publishes QEC Technology Roadmap to Accelerate Utility-Scale Quantum Computing appe
A man was killed after ramming his vehicle into the front doors of a synagogue in suburban Detroit on Thursday afternoon. There was an exchange of gunfire with security staff. Police say the driver died in the car, but the cause of death has not been determined. Multiple law enforcement agencies, including the FBI, responded to the scene. Bloomberg's Myles Miller joins Bloomberg Businessweek Daily with the latest. (Source: Bloomberg)
IBM released a reference architecture for Quantum-Centric Supercomputing (QCSC), a technical framework that defines the integration of Quantum Processing Units (QPUs) into high-performance computing (HPC) environments. This modular blueprint establishes how QPUs, Graphics Processing Units (GPUs), and Central Processing Units (CPUs) operate as a unified stack to address computational problems in chemistry, materials science, and [...] The post IBM Publishes Reference Architecture for Quantum-Cent
A Honda informou nesta quinta-feira (12) que terá seu primeiro prejuízo anual em quase 70 anos como empresa de capital aberto, atingida por até US$ 15,7 bilhões (R$ 81 bilhões) em custos de reestruturação em seu negócio de veículos elétricos, devido à demanda mais fraca do que o esperado pela tecnologia . Leia mais (03/12/2026 - 15h31)
A disputa entre a startup de inteligência artificial Anthropic e o governo dos Estados Unidos sobre o uso militar da tecnologia chegou à capa da revista Time na última sexta-feira (6). Leia mais (03/12/2026 - 14h25)
Insider Brief PRESS RELEASE — Qblox, a global leader in quantum stack technology, and the Institut quantique (IQ) of the Université de Sherbrooke are proud to announce a strategic scientific collaboration to advance quantum research at the graduate and postdoctoral level. Under this agreement, the IQ becomes a Qblox Excellence Center, establishing a collaborative hub […]
Insider Brief PRESS RELEASE — Quantum Computing Inc. (“QCi” or the “Company”) (Nasdaq: QUBT) an innovative, quantum optics and integrated photonics technology company, and Ciena (Nasdaq: CIEN) today announced a joint demonstration of next-generation quantum secure communications at OFC 2026 in the Corporate Village Booth #5355. The live demonstration showcases a comprehensive security architecture integrating quantum key distribution, […]
Insider Brief PRESS RELEASE —  IBM (NYSE: IBM) today unveiled the industry’s first published quantum‑centric supercomputing reference architecture, a new blueprint for integrating quantum computing into modern supercomputing environments. The architecture shows how quantum processors (QPUs) can work alongside GPUs and CPUs—across on‑premises systems, research centers, and the cloud—in order to tackle scientific challenges that no single computing […]
Insider Brief PRESS RELEASE — Qrypt, the quantum security company that eliminated encryption key transmission, today announced it has brought its BLAST Protocol end-to-end encryption and quantum-entropy key generation to the NVIDIA Jetson edge AI platform, including Jetson Orin Nano and Jetson Thor. The integration extends Qrypt’s quantum-secure encryption from NVIDIA BlueField DPUs in the […]
Insider Brief PRESS RELEASE — Riverlane, the world leader in quantum error correction (QEC) technology and tools, today published its new roadmap outlining how its technology can accelerate the arrival of utility-scale quantum computing by as much as 3-5 years. The roadmap lays out step-by-step engineering and science milestones to overcome quantum computing’s defining technical […]
Insider Brief PRESS RELEASE — Quantum technology company QphoX has today announced the launch of the Quantum Transducer, a breakthrough product that directly aims at bridging the gap between microwave-based qubits and established optical telecommunications technologies. By enabling high-fidelity quantum state conversion, the Quantum Transducer allows quantum information to travel through optical fiber networks at room temperature and over […]
Author(s): Karun Gadge, Abhinav Prem, and Rishabh Jha Periodically driven quantum systems can host nonequilibrium phenomena without static analogs, including in their entanglement dynamics. Here, we discover temporal entanglement transitions (TETs) in a Floquet spin chain, which correspond to a quantum phase transition in the spectrum of the entangleme… [Phys. Rev. Lett. 136, 100203] Published Thu Mar 12, 2026
Author(s): Chang Liu, Matteo Ippoliti, and Wen Wei Ho We report a phase transition in the projected ensemble—the collection of postmeasurement wave functions of a local subsystem obtained by measuring its complement. The transition emerges in systems undergoing random permutation dynamics, a type of quantum time evolution wherein computational basis st… [Phys. Rev. Lett. 136, 100404] Published Thu Mar 12, 2026
Author(s): Haowei Li, Zhiyuan Yao, and Xingze Qiu Estimating partition functions of Ising spin glasses is a cornerstone of statistical physics and computational science, yet it remains classically challenging due to its #$P$-hard complexity. While Jarzynski’s equality offers a theoretical pathway, its practical application is crippled at low temper… [Phys. Rev. Lett. 136, 100601] Published Thu Mar 12, 2026
Author(s): Samuel J. Garratt and Max McGinley We use concepts from quantum cryptography to relate the entanglement in many-body mixed states to standard correlation functions. If a system can be used as a resource for distilling private keys—random classical bits that are shared by spatially separated observers but hidden from an eavesdropper h… [Phys. Rev. Lett. 136, 100802] Published Thu Mar 12, 2026
Author(s): Pavel P. Popov, Joana Fraxanet, Luca Barbiero, and Maciej Lewenstein Designing the amplitude and range of couplings in quantum systems is a fundamental tool for exploring a large variety of quantum mechanical effects. Here, we consider off-resonant photon scattering processes on a geometrically shaped molecular cloud. Our analysis shows that such a setup is properly … [Phys. Rev. Lett. 136, 103403] Published Thu Mar 12, 2026
Author(s): Jonathan Schmidt and Nicola A. Spaldin We use the self-consistent harmonic approximation with machine learning interatomic potentials to calculate the effect of $^{18}\mathrm{O}$ substitution on the properties of quantum paraelectric ${\mathrm{SrTiO}}_{3}$ (STO). We find that calculations including both quantum and anharmonic effects are… [Phys. Rev. Lett. 136, 106404] Published Thu Mar 12, 2026
Insider Brief PRESS RELEASE — Quantinuum, a leading quantum computing company, today announced the establishment of a new R&D and Operations Centre (the “Centre”) in Singapore, marking its formal expansion into Singapore. This important development will enable Quantinuum to deepen collaboration with the nation’s research and industrial ecosystem, together with the company’s plan to deploy […]
Insider Brief PRESS RELEASE — A team from Mayo Clinic took first place at the Berlin Quantum Hackathon 2026 after building a hybrid quantum-AI model designed to detect a person’s intention to move directly from brain signals, according to a Mayo Clinic news release. The Mayo Clinic researchers added that it’s a development researchers say […]
Insider Brief PRESS RELEASE — Xanadu Quantum Technologies Inc. (“Xanadu”), a leading photonic quantum computing company, has partnered with the Electronics and Telecommunications Research Institute (ETRI), South Korea’s premier government-funded research institution, on a new two-year collaborative research project. The project is supported by a major grant from the South Korean government to advance the nation’s quantum […]
arXiv:2603.10083v1 Announce Type: new Abstract: Quantum machine learning models based on parameterized circuits can be viewed as Fourier series approximators. However, they often struggle to learn functions with multiple frequency components, particularly high-frequency or non-dominant ones; a phenomenon we term the quantum Fourier parameterization bias. Inspired by recent advances in classical Fourier neural operators (FNOs), we adapt the multi-stage residual learning idea to the quantum domain
arXiv:2603.10119v1 Announce Type: new Abstract: Preparing algebraically correlated ground states of quantum many-body systems is an important, yet challenging task for quantum simulation. We introduce a protocol that employs local projective measurements and unitary feedback for frustration-free gapless systems. Our approach prepares a priori unknown ground states in time that scales polynomially with system size. We analytically show the performance our protocol for the dynamics of a single-par
arXiv:2603.10191v1 Announce Type: new Abstract: Demonstrating quantum heuristics that outperform strong classical solvers on large-scale optimization remains an open challenge. Here we introduce Regularized Warm-Started QAOA (RWS-QAOA), which initializes qubits by minimizing expected energy with a regularizer that penalizes near-bitstring states, preventing QAOA from stalling. We further propose a protocol that yields fixed, instance-independent parameters, enabling RWS-QAOA to operate as a non-
arXiv:2603.10206v1 Announce Type: new Abstract: The quantum trajectories in the de Broglie-Bohm formulation of quantum mechanics depend on an additional quantum potential derived from the full wave solution of Schr\"odinger's equation. The task of supplying collectively all the correct quantum results strongly alters the characteristics of the corresponding classical trajectories, which underlie semiclassical approximations to the evolving wave function. Both classical and quantum trajectories a
arXiv:2603.10224v1 Announce Type: new Abstract: We present a simple, malleable and low-overhead approach for improving generic biased quantum error mitigation (QEM) methods, achieving up to 15% fidelity improvements over standard QEM on 100-qubit circuits with up to 2000 entangling gates. We do so by constructing verifiable benchmark circuits which mirror the application circuit's native-gate structure and thus noise profile. These circuits can be used to benchmark and mitigate the bias of the u
arXiv:2603.10239v1 Announce Type: new Abstract: In modern wireless networks, radio channels serve a dual role. Whilst their primary function is to carry bits of information from a transmitter to a receiver, the intrinsic sensitivity of transmitted signals to the physical structure of the environment makes the channel a powerful source of knowledge about the world. In this paper, we consider an agent that learns about its environment using a quantum sensing probe, optimised using a quantum circui
arXiv:2603.10289v1 Announce Type: new Abstract: Whether uniquely quantum resources confer advantages in fully classical, competitive environments remains an open question. Competitive zero-sum reinforcement learning is particularly challenging, as success requires modelling dynamic interactions between opposing agents rather than static state-action mappings. Here, we conduct a controlled study isolating the role of quantum entanglement in a quantum-classical hybrid agent trained on Pong, a comp
arXiv:2603.10325v1 Announce Type: new Abstract: Adaptive ansatz construction has emerged as a powerful technique for reducing circuit depth and improving optimization efficiency in variational quantum eigensolvers. However, existing adaptive methods, including ADAPT-VQE, rely solely on first-order gradients and therefore ignore the underlying geometry of the quantum state space, limiting both convergence behavior and operator-selection efficiency. We introduce Geo-ADAPT-VQE, a geometry-aware ada
arXiv:2603.10415v1 Announce Type: new Abstract: We derive and analytically prove a tight quantum speed limit (QSL) for ergotropy charging in the $N$-qubit Dicke quantum battery: the first-passage time to normalised ergotropy $\epsilon$ satisfies $\tau^{*}(\epsilon) \geq \sqrt{N\epsilon}/(2\lambda\sqrt{\bar{n}})$, where $\lambda$ is the coupling and $\bar{n}$ is the mean charger photon number. The bound follows from an exact perturbative identity $\epsilon(t) = A\lambda^2\bar{n}t^2 + \mathcal{O}(
arXiv:2603.10431v1 Announce Type: new Abstract: We investigate, how finite temperature influences quantum coherence in multipartite open systems by analyzing a tripartite spin boson model subjected to non-Markovian dephasing. Two distinct environmental configurations are considered viz. independent local reservoir and a common structured reservoir characterized by an Ohmic spectral density. In this framework, temperature enters explicitly through the time dependent dephasing rates, enabling a sy
arXiv:2603.10480v1 Announce Type: new Abstract: Continuous-variable quantum key distribution (CV-QKD) is a promising quantum-safe alternative to classical asymmetric cryptography that enables two authenticated parties to establish a shared secret over a potentially eavesdropped quantum channel. A key step in CV-QKD post-processing is information reconciliation, which leverages forward error correction (FEC) techniques to extract identical bit strings from noisy correlated data. In this work, we
arXiv:2603.10491v1 Announce Type: new Abstract: Skyrmions are a particle-like topology with a quantised skyrmion number, realised across condensed matter and photonic platforms alike. In quantum photonics, they constitute an emerging resource, promising robust quantum information encoding, so far realised as single photon and bi-photon entangled states. Here we report the first visualisation of tripartite entanglement dynamics through topological structure using spin-skyrmion entangled states, w
arXiv:2603.10506v1 Announce Type: new Abstract: Quantum communication between distant superconducting qubits on separate chips using itinerant microwave photons has been studied to realize distributed quantum information processing. To enhance information capacity and fault tolerance in quantum networks, it is beneficial to encode a large quantity of quantum information using auxiliary degrees of freedom of these photons. In this work, we experimentally investigate the use of temporal modes of p
arXiv:2603.10518v1 Announce Type: new Abstract: Airfoil shape optimization presents a challenge where classical solvers frequently struggle with computational efficiency and local minima. In the promising paradigm of quantum computing, the coherent Ising machine (CIM), a specialized physical solver, offers acceleration capabilities. However, its native discrete binary architecture restricts the application in aerodynamic design. To bridge this gap, we propose a comprehensive framework that trans
arXiv:2603.10571v1 Announce Type: new Abstract: We propose two schemes to achieve remote entanglement distribution between two mechanical nodes with a significant frequency mismatch, based on optomechanical systems. The first scheme utilizes the physical mechanism to redistribute the quantum entanglement initially established in a dispersively-coupled optomechanical system with a megahertz mechanical resonance to a distant optomechanical system which embodies the tripleresonant interaction induc
arXiv:2603.10580v1 Announce Type: new Abstract: We develop a quantum teleportation protocol of an unknown optical single rail qubit using a hybrid quantum channel composed of continuous variable (CV) states of certain parity. The quantum channel is characterized by two parameters: a squeezing parameter of single-mode squeezed vacuum (SMSV) state and the beam splitter (BS) parameter used to implement it. The CV part of the hybrid state belongs to Alice, while discrete variable (DV) half is contro
arXiv:2603.10601v1 Announce Type: new Abstract: In this paper I argue against Carcassi, Calderon, and Aidala's recent claim that the Hilbert spaces are unphysical and should be replaced with the Schwartz spaces in quantum mechanics, since Hilbert spaces include states with infinite expectation values for certain observables. I also review and discuss issues regarding unbounded operators in quantum mechanics raised by Streater and Wightman, Heathcote, and Lemos. I argue that the existence of infi
arXiv:2603.10614v1 Announce Type: new Abstract: Exceptional points (EPs) exhibit strongly enhanced spectral responses and are therefore promising candidates for sensing applications. Whether these non-Hermitian degeneracies provide a genuine advantage in the quantum regime has been the subject of ongoing debate. Here, we address this issue within a scattering-matrix formalism for sensing with coherent light, which allows the quantum Fisher information (QFI) to be evaluated directly from experime
arXiv:2603.10618v1 Announce Type: new Abstract: Orbital angular momentum (OAM) entanglement gives access to multiple qubit and high dimensional Hilbert spaces, but is unfortunately susceptible to disturbance, decaying in real-world noisy channels. Here, we show there is an underlying topology arising from OAM entanglement that is robust to such channels, which we demonstrate using atmospheric turbulence -- exemplary of stochastic or chaotic media. Using a quantum channel with various turbulence
arXiv:2603.10647v1 Announce Type: new Abstract: Quantum fluctuation relations provide a microscopic formulation of thermodynamics beyond equilibrium, but experimentally accessing many-body quantum work statistics remains an outstanding challenge. The quantum piston constitutes a canonical model of boundary-driven nonequilibrium dynamics, where finite-time deformation of a confining potential generates non-adiabatic transitions, dissipation and irreversibility. Here we experimentally simulate the
arXiv:2603.10654v1 Announce Type: new Abstract: Exceptional points (EPs), indicative of parity-time (PT) symmetry breaking, play a central role in non-Hermitian physics, yet most studies begin from deliberately engineered effective Hamiltonians whose parameters are tuned to exhibit exceptional behavior. In realistic open quantum systems, however, dynamics are governed by Lindblad superoperators whose spectral structure is high-dimensional, symmetry-constrained, and not obviously reducible to min
arXiv:2603.10663v1 Announce Type: new Abstract: Self-testing--the attractive possibility to infer the underlying physics of a quantum device in a black-box scenario--has gained increased traction in recent years, with applications to device-independent quantum information processing. Thus far, self-testing has been done under the assumption that the settings for the requisite Bell test are chosen freely and independently of the device tested in the experiment. That is, the random number generato
arXiv:2603.10665v1 Announce Type: new Abstract: Efficient optomechanical cooling typically requires high photon occupancy to maximize cooling power, a constraint that generally limits the degree of coherent quantum control available in the few-photon regime. Here, we investigate this trade-off by considering a strongly nonlinear cavity operated as a discrete quantum system. In the weak-coupling limit, we derive a general connection between the optomechanical damping rate and the cavity's dressed
arXiv:2603.10691v1 Announce Type: new Abstract: Quantum many-body systems can exhibit distinct regimes where dynamics is either ergodic, dynamically exploring an extensive region of available state-space, or non-ergodic, where the dynamics may be restricted. An example is the many-body localization (MBL) transition, where disorder induces non-ergodic behaviour. Most measures of ergodicity notably rely on global quantities, such as level spacing statistics. We explore the ability for a subsystem
arXiv:2603.10699v1 Announce Type: new Abstract: Increasing connectivity and decreasing qubit-state delocalization without compromising the speed and accuracy of elementary gate operations are topical challenges in the development of large-scale superconducting quantum computers. In this theoretical work, we study a special honeycomb qubit lattice where each qubit inside a unit cell is coupled to every other one via two dedicated tunable couplers and a common central element. This results in an e
arXiv:2603.10707v1 Announce Type: new Abstract: We propose a hybrid photonic quantum reservoir computing (QRC) framework for swaption surface prediction. The pipeline compresses 224-dimensional surfaces to a 20-dimensional latent space via a sparse denoising autoencoder, extracts 1,215 Fock-basis features from an ensemble of three fixed photonic reservoirs, concatenates them with a 120-dimensional classical context, and maps the resulting 1,335-dimensional feature vector to predictions with Ridg
arXiv:2603.10751v1 Announce Type: new Abstract: We study purification dynamics in monitored quantum processes governed by ensembles of quantum circuits in different random-matrix symmetry classes. We analyze the universal aspects that emerge away from the measurement induced phase transition and inside the volume/weak measurement phase and in the scaling limit of large time and Hilbert space dimension. We present two toy models that reveal two complementary visions and provide quantitative acces
arXiv:2603.10796v1 Announce Type: new Abstract: We develop a quantum statistical framework for passive optical surface metrology. Modelling a surface as an incoherent ensemble of point emitters imaged through a diffraction-limited system, we employ techniques from quantum parameter estimation and hypothesis testing to derive ultimate bounds for jointly estimating geometrical features and for deciding the presence or absence of surface defects, and we identify optimal measurements from the geomet
arXiv:2603.10805v1 Announce Type: new Abstract: We present a scheme for implementing a high-fidelity non-linear phase shift on a photonic state. The scheme is based on repeated scattering off a two-level quantum emitter embedded in a chiral or one-sided waveguide. The waveguide is equipped with elements inducing second-order dispersion and temporal phase shifts, which effectively form a harmonic trap and confine the photon pulses to a Gaussian shape. The same quantum emitter can be used for each
arXiv:2603.10839v1 Announce Type: new Abstract: The Lindblad equation determines the time evolution of the density operator of open quantum systems. While valid for any system size, its use is, in practice, restricted to prototype/surrogate models with the aim of tackling specific aspects of the overall quantum complexity of a multi-atomic system. Path integral molecular dynamics (PIMD) instead provides static and dynamical quantum statistical averages of physical observables for systems in equi
arXiv:2603.10843v1 Announce Type: new Abstract: Efficient entanglement distillation is a central task in quantum information science and future quantum networks. At the core of distillation protocols are the quantum error correction and detection schemes which enhance the fidelity of entangled pairs. Conventional protocols focus on digital systems, which typically require complicated compiled circuits, high-fidelity multi-qubit operations and delicate pulse-level control that impose high demands
arXiv:2603.10853v1 Announce Type: new Abstract: Quantum batteries are quantum systems that store energy and deliver it on demand, and their practical value hinges on how fast they can be charged. While collective charging protocols and global control are known to enhance charging power, it remains unclear how the battery's internal interaction architecture itself constrains performance. Here we study interacting fermionic batteries whose internal couplings are encoded by a graph adjacency matrix
arXiv:2603.10883v1 Announce Type: new Abstract: Quantum telepathy is the concept of using quantum entanglement to solve real-world problems involving decision coordination between parties with restricted communication. One possible reason for this restriction is a latency constraint: some pairs of parties do not have enough time to communicate with each other before they have to produce their outputs. Example scenarios include high frequency trading and distributed systems. Another reason is iso
arXiv:2603.10917v1 Announce Type: new Abstract: Quantum hypergraph states extend the well-studied class of graph states by taking into account multi-qubit interactions through hyperedges. They provide a powerful framework to represent a family of quantum states with genuine multipartite entanglement. In this review, we provide a compact overview of the formal structure, entanglement characteristics, and operational relevance of hypergraph states in quantum information theory. We begin by introdu
arXiv:2603.10919v1 Announce Type: new Abstract: Hybrid quantum computing systems that combine discrete-variable qubits with continuous-variable qumodes offer promising advantages for quantum simulation, error correction, and sensing applications. However, existing quantum software frameworks lack native support for expressing and manipulating hybrid circuits, forcing developers to work with fragmented toolchains or rely on simulation-coupled representations that limit scalability. We present Hyb
arXiv:2603.10931v1 Announce Type: new Abstract: Time-slicing has emerged as a strategy for incorporating semiclassical propagation into real-time path integral formulation and recovering full quantum mechanical dynamics. A central step is the decomposition of a time-evolved wave function into a superposition of Gaussian wave packets. Here we introduce a quadrature-free variational framework for Gaussian wave packet decomposition, reformulating it as an optimization problem in which the parameter
arXiv:2603.10932v1 Announce Type: new Abstract: In quantum computations of gauge theories at finite temperature and finite density, it is challenging to enforce Gauss's law for all states contributing to the thermal ensemble. While various techniques for implementing gauge constraints have been proposed, they often involve practical trade-offs. In this work, we adopt the Quantum Minimally Entangled Typical Thermal States (QMETTS) algorithm for $\mathbb{Z}_2$ gauge-constrained systems, which allo
arXiv:2603.10981v1 Announce Type: new Abstract: We investigate Permutation-Invariant (PI) quantum error-correcting codes encoding a logical qudit of dimension $\mathrm{d}_\mathrm{L}$ in PI states using physical qudits of dimension $\mathrm{d}_\mathrm{P}$. We extend the Knill--Laflamme (KL) conditions for $d-1$ deletion errors from qubits to qudits and investigate numerically both qubit ($\mathrm{d}_\mathrm{L} = \mathrm{d}_\mathrm{P} = 2$) and qudit ($\mathrm{d}_\mathrm{L} > 2$ or $\mathrm{d}_\ma
arXiv:2603.11014v1 Announce Type: new Abstract: Recent work on the instantaneous quantum polynomial-time (IQP) quantum-circuit Born machine (QCBM) highlights a promising paradigm for generative modeling: train classically, deploy quantumly. In this setting, the training objective can be evaluated efficiently on a classical computer, while sampling from the resulting model may still be classically intractable. Furthermore, in the IQP-QCBM framework, extending the model family with ancillary qubit
arXiv:2603.11018v1 Announce Type: new Abstract: Single-qubit gates on superconducting quantum processors are typically implemented using microwave pulses applied through dedicated control lines. However, these microwave pulses may also drive other qubits due to crosstalk arising from capacitive coupling and wavefunction overlap in systems with closely spaced transition frequencies. Crosstalk and frequency crowding increase errors during simultaneous single-qubit operations relative to isolated g
arXiv:2603.11034v1 Announce Type: new Abstract: We study quantum-to-classical correspondence of the Krylov space for evolutions driven by unitary maps with a classical limit. This entails a proper definition of corresponding quantum and classical operators, inner products and initial states. We prove that with these definitions the purely classical Krylov space is indeed obtained as the asymptotic $\hbar\to 0$ expansion of the quantum Krylov space, and provide several examples of such correspond
arXiv:2603.10039v1 Announce Type: cross Abstract: The nonlinear inductance of the Josephson junction has enabled the development of a wide range of continuous-variable amplifiers and qubit-based devices with unprecedented sensitivity. We present an alternative use of the Josephson junction in the context of broadband impedance matching. The idea poses a potential solution to a longstanding problem in the field of high energy particle physics. The axion, a compelling candidate for the dark matter
arXiv:2603.10447v1 Announce Type: cross Abstract: When single-shot qubit readout protocols are adapted for multilevel systems, theoretical $T_1$ lifetime calculations often fall short of capturing the experimental lifetime trends. We identify {\it extrinsic} population dynamics as the fundamental origin of this disparity, establishing that the lifetime estimates can, in certain operating regions, be distinct from the intrinsic $T_1$ time. We clarify these aspects with an integrated theory to add
arXiv:2603.10523v1 Announce Type: cross Abstract: Electronegativity is a cornerstone of chemical intuition, essential for rationalizing bonding, reactivity, and material properties. However, prevailing scales remain empirically derived, often relying on parameterized models or composite physical quantities. In this work, we introduce a universal electronegativity scale founded on the atomic mean inner potential (AMIP), also known as the average Coulomb potential, a fundamental, quantum-mechanica
arXiv:2603.10553v1 Announce Type: cross Abstract: Electric-dipole forbidden spectroscopic transitions in atoms form the basis of many advanced implementations of quantum computers, atomic clocks and quantum sensors. Coherently addressing such transitions in molecules which are among the most ubiquitous and versatile quantum objects has remained a long-standing challenge owing to their complex energy-level structure. Here, we report the search, observation and coherent manipulation of electric-qu
arXiv:2603.10815v1 Announce Type: cross Abstract: In interacting quantum many-body systems, relaxation toward equilibrium reflects a competition between internal chaotic dynamics and environmental dissipation. While conventional Markovian baths typically produce exponential decay, non-Markovian dissipation can give rise to more intricate behavior, including algebraic relaxation. We study an open Sachdev-Ye-Kitaev (SYK) model coupled to a pseudogapped fermionic bath, using the Keldysh formalism t
arXiv:2603.10948v1 Announce Type: cross Abstract: In quantum Monte Carlo (QMC), what can be measured efficiently is largely determined by what is sampled. When the sampled object is the partition function, a broad class of observables, including general off-diagonal operators, is typically unavailable as direct estimators. In this article, we introduce a paradigm shift by replacing the partition function with a generalized reduced density matrix (GRDM) as the simulated object. This reformulation
arXiv:2603.11037v1 Announce Type: cross Abstract: The microscopic origin of high-temperature superconductivity in cuprates remains one of the central open questions in condensed matter physics. Growing experimental and theoretical evidence suggests that the bare single-band Fermi-Hubbard model may not fully capture properties of cuprates such as superconductivity, motivating us to revisit the canonical three-band model of the copper-oxide planes - the Emery model - from which the single-band cou
arXiv:2310.20416v2 Announce Type: replace Abstract: Beam splitters (BSs) and optical parametric amplifiers (OPAs) can be described using Lie groups $SU(2)$ and $SU(1,1)$. Here, we show that the dynamical trajectories of these devices are connected via a Wick rotation on their respective group manifolds. This yields an exact amplitude-level duality between BSs of transmittance $\eta$ and OPAs of gain $g=1/\eta$. This geometric correspondence admits a compact tensor-network formulation, which we u
arXiv:2311.08971v5 Announce Type: replace Abstract: We analyze the interaction between quantum matter and classical objects through a general effective channel for hybrid dynamics, subject to the fundamental constraint that no quantum correlations can be generated between the classical and quantum sectors from any initially separable state. We demonstrate that, within this hybrid framework, imposing an additive conserved observable $\langle O_{QC} \rangle = \langle O_Q \rangle + \langle O_C \ran
arXiv:2404.06578v4 Announce Type: replace Abstract: We consider multi-path routing of entanglement in quantum networks, where a pre-prepared multipartite entangled 2D cluster state serves as a resource to perform different tasks on demand. We show how to achieve parallel connections between multiple, freely chosen groups of parties by performing appropriate local measurements among diagonal paths, which preserves the entanglement structure of the remaining state. We demonstrate how to route mult
arXiv:2404.18104v3 Announce Type: replace Abstract: The relevance of shallow-depth quantum circuits has recently increased, mainly due to their applicability to near-term devices. In this context, one of the main goals of quantum circuit complexity is to find problems that can be solved by shallow quantum circuits but require more computational resources classically. Our first contribution in this work is to prove new separations between classical and quantum constant-depth circuits. Firstly, we
arXiv:2405.01786v5 Announce Type: replace Abstract: Boson sampling, a computational task believed to be classically hard to simulate, is expected to hold promise for demonstrating quantum computational advantage using near-term quantum devices. However, noise in experimental implementations poses a significant challenge, potentially rendering boson sampling classically simulable and compromising its classical intractability. Numerous studies have proposed classical algorithms under various noise
arXiv:2405.02278v4 Announce Type: replace Abstract: Photon loss rates set an effective upper limit on the size of computations that can be run on current linear optical quantum devices. We present a family of techniques designed to mitigate the effects of photon loss on both output probabilities and expectation values derived from noisy linear optical circuits composed of an input of n photons, an m-mode interferometer, and m single photon detectors. Central to these techniques is the constructi
arXiv:2406.17995v4 Announce Type: replace Abstract: Large-scale quantum computers promise transformative speedups, but their viability hinges on fast and reliable quantum error correction (QEC). At the center of QEC are decoders-classical algorithms running on hardware such as FPGAs, GPUs, or CPUs that process error syndromes to detect errors every microsecond to preserve fault-tolerance. Quantum processors, therefore, operate not in isolation, but as accelerators tightly coupled with powerful c
arXiv:2411.18589v2 Announce Type: replace Abstract: It is quite common to use the generalized probabilistic theories (GPTs) as generic models to reconstruct quantum theory from a few basic principles and to gain a better understanding of the probabilistic or information theoretic foundations of quantum physics and quantum computing. A variety of symmetry postulates was introduced and studied in this framework, including the transitivity of the automorphism group (1) on the pure states, (2) on th
arXiv:2412.03083v3 Announce Type: replace Abstract: In this work, a novel quantum neural network is introduced as a means to approximate any unitary evolution through the Standard Recursive Block Basis (SRBB) and is subsequently redesigned with the number of CNOTs asymptotically reduced by an exponential contribution. This algebraic approach to the problem of unitary synthesis exploits Lie algebras and their topological features to obtain scalable parameterizations of unitary operators. First, t
arXiv:2503.23554v3 Announce Type: replace Abstract: The symmetric subspace of multi-qubit systems, that is, the space of states invariant under permutations, is commonly encountered in applications in the context of quantum information and communication theory. It is known that the symmetric subspace can be described in terms of irreducible representations of the group $SU(2)$, whose representation spaces form a basis of symmetric states, the so-called Dicke states. In this work, we present defo
arXiv:2504.20208v4 Announce Type: replace Abstract: The Wigner eigenfunctions of a free quantum particle propagating on a plane are derived. Two possibilities are analysed. Firstly, the particle of given energy and angular momentum is discussed. In that case, a special choice of coordinates on the symplectic space $(\mathbb{R}^{4},\,\omega)$ suitable for the representation of eigenstates of the discussed particle is presented. Further, the Moyal $\star_{(\text{M})}$-product on the phase space is
arXiv:2506.00366v3 Announce Type: replace Abstract: EPR showed that two particles emitted from a source can be entangled by a shared wavefunction where two non-commuting observables (position, momentum) can be simultaneously real, leading to a contradiction with quantum mechanics (two non-commuting variables can not be simultaneously real). John Bell derived an inequality where any local hidden variables prediction is bounded and quantum mechanics can violate the inequality. Bell tests on correl
arXiv:2506.14526v3 Announce Type: replace Abstract: Quantum speed limits are usually regarded as fundamental restrictions, constraining the amount of computation that can be achieved within some given time and energy. Complementary to this intuition, here we show that these limitations are also of operational value: they enable the secure generation of certified randomness. We consider a prepare-and-measure scenario with some (experimentally determined or promised) upper bound on the energy unce
arXiv:2506.22571v2 Announce Type: replace Abstract: Quantifying measurement precision in quantum systems is vital for advancing quantum technologies such as sensing, communication, and computation. The quantum Fisher information (QFI) sets the ultimate precision bound in Hermitian systems; however, extending this concept to non-Hermitian systems, even those with real spectra, poses conceptual challenges due to their non-unitary dynamics. We compare three probability-conserving approaches for eva
arXiv:2507.13006v2 Announce Type: replace Abstract: The classical Kramers-Henneberger transformation connects, via a series of unitary transformations, the dynamics of a quantum particle of mass $m$ located in a trap at position $\alpha(t)$, with the dynamics of a charge $e$ moving in an electric field $e{\cal{E}}(t)=-m\ddot{\alpha}(t)$ within the dipole approximation. In this paper, we extend the classical Kramers-Henneberger transformation to the quantum electrodynamic and quantum optical real
arXiv:2507.13174v3 Announce Type: replace Abstract: We establish an operational connection between discrete rounds of generalized measurements and continuous-time decoherence, with an explicit correspondence between the number of measurement rounds and the evolution time. Operationally, we show that a single round of such a generalized measurement eliminates quasiprobability negativity in finite-dimensional systems. From the decoherence perspective, this loss of negativity occurs abruptly at a c
arXiv:2508.11368v2 Announce Type: replace Abstract: Time of arrival refers to the time a particle takes after emission to impinge upon a suitably idealized detector surface. Within quantum theory, no generally accepted solution exists so far for the corresponding probability distribution of arrival times. In this work we derive a general solution for a single body without spin impacting on a so called ideal detector in the absence of any other forces or obstacles. A solution of the so called scr
arXiv:2508.19075v5 Announce Type: replace Abstract: Analog quantum simulators with global control fields have emerged as powerful platforms for exploring complex quantum phenomena. Despite these advances, a fundamental theoretical question remains unresolved: to what extent can such systems realize universal quantum dynamics under global control? Here we establish a necessary and sufficient condition for universal quantum computation using only global pulse control, proving that a broad class of
arXiv:2509.02353v3 Announce Type: replace Abstract: We present a realistic implementation of a quantum engine powered by a phaseonium gas of coherently prepared three-level atoms -- where quantum coherence acts as a thermodynamic resource. Using a collision model framework for phaseonium-cavity interactions and cavity optomechanics, we construct a full engine cycle based on two non-thermal reservoirs, each characterized by coherence-induced effective temperatures. This configuration enhances the
arXiv:2510.01775v2 Announce Type: replace Abstract: Manifesting across all time, mass and length scales, nonlinearities lie at the core of numerous physical phenomena. Next-generation quantum applications, such as quantum sensing, require the combination of nonlinearity with non-classical correlations. This necessitates the search for an experimental platform which enables a nonlinear response at ultra-low excitation levels in a system with practical sensing potential and quantum compatibility.
arXiv:2510.09262v2 Announce Type: replace Abstract: The generation of entangled photon pairs is highly useful for many types of quantum technologies. In this work an entangled photon pair generator that utilises the biexciton-exciton cascade in semiconductor quantum dots is described on a physical, mathematical, and software level. The system is implemented and simulated as a self-contained component in a framework for bigger quantum optical experiments. Thus, it is a description to further the
arXiv:2511.01608v2 Announce Type: replace Abstract: Estimating the fidelity between an unknown quantum state and a fixed target is a fundamental task in quantum information science. Direct fidelity estimation (DFE) enables this without full tomography by sampling observables according to a target-dependent distribution. However, existing approaches face notable trade-offs. Grouping-based DFE achieves strong accuracy for small systems but suffers from exponential scaling, and its applicability is
arXiv:2511.03352v2 Announce Type: replace Abstract: This work demonstrates that repeated weak measurements together with post-selection can produce sharp dynamical discontinuities in meter observables, even in minimal quantum systems. The discontinuous behavior is governed by the polar angle of the post selected state, which serves as a continuous control parameter. As this angle is varied, the expectation value of the meter observables changes abruptly at the point where the imaginary part of t
arXiv:2511.03874v2 Announce Type: replace Abstract: Physical Gottesman-Kitaev-Preskill (GKP) states are inherently noisy as ideal ones would require infinite energy. While this is typically considered as a deficiency to be actively corrected, this work demonstrates that imperfect GKP stabilizer states can be leveraged in order to apply non-Clifford gates using only linear optical elements. In particular, Gaussian operations on normalizable GKP states, combined with homodyne measurements, permit
arXiv:2511.05264v3 Announce Type: replace Abstract: The Euler-Bernoulli beam model has been studied classically and semi-classically. The semi-classical quantization is done in an analogous way to the quantization of the electromagnetic field, and we found an effect that is similar to the Casimir effect, which is the photonic Casimir effect. The Casimir force, by unit area, is proportional to the first mode energy divided by the volume of the beam. For the hinged-hinged boundary condition, degen
arXiv:2512.01982v2 Announce Type: replace Abstract: We present a seven-pronged no-go result for quantum mechanics: a "heptalemma". It shows that seven initially plausible theses about physical reality are jointly inconsistent with the predictions of quantum mechanics, while any six are jointly consistent. We must then decide which theses to retain and which to give up. Since different interpretations of quantum mechanics entail different responses to the heptalemma, we get a novel taxonomy of su
arXiv:2512.07737v2 Announce Type: replace Abstract: Fault-tolerant quantum computing will require error rates far below those achievable with physical qubits. Quantum error correction (QEC) bridges this gap, but depends on decoders being simultaneously fast, accurate, and scalable. This combination of requirements remains unmet by a machine-learning decoder, nor by any decoder for promising resource-efficient codes such as the color code. Here we introduce AlphaQubit 2, a neural-network decoder
arXiv:2512.10814v2 Announce Type: replace Abstract: We consolidate recent theoretical advances in Detector Error Model (DEM) estimation and formalize several algorithms to learn DEM parameters and structure from syndromes without using a decoder, demonstrating recovery of known DEMs from simulated syndromes with precision limited only by finite-sample effects. We then apply these algorithms to estimate DEMs from Google's 72- and 105-qubit chips. Using a likelihood function that is tractable for
arXiv:2512.13971v4 Announce Type: replace Abstract: Multipartite entanglement is a crucial resource for quantum technologies; however, its scalable generation in noisy quantum devices remains a significant challenge. Here, we propose a low-depth quantum neural network architecture with linear scaling, employing a novel approach to introducing activation functions for entanglement engineering. As a testbed to demonstrate the clear advantage unlocked by the introduction of nonlinear activations, w
arXiv:2512.17980v2 Announce Type: replace Abstract: We introduce a quantum algorithm to perform the Laplace transform on quantum computers. Already, the quantum Fourier transform (QFT) is the cornerstone of many quantum algorithms, but the Laplace transform or its discrete version has not seen any efficient implementation on quantum computers due to its dissipative nature and hence non-unitary dynamics. However, a recent work has shown an efficient implementation for certain cases on quantum com
arXiv:2601.08007v2 Announce Type: replace Abstract: Adding a constant energy offset leaves classical dynamics unchanged. In quantum mechanics it changes the phase velocity of the wavefunction. The inclusion of the constant rest energy in the non-relativistic Klein-Gordon formulation leads to significantly higher phase velocities compared with the Schr\"odinger equation. The Schr\"odinger equation predicts an attenuation of the wavefunction along one of the paths in a Sagnac interferometer when a
arXiv:2601.12292v2 Announce Type: replace Abstract: We investigate quantum correlations in a hybrid qubit-qutrit system subject to both axial and planar single-ion anisotropies, dipolar spin-spin interactions, and Dzyaloshinskii-Moriya (DM) coupling. Using Negativity, Measurement-Induced Non-locality (MIN), Uncertainty-Induced Nonlocality (UIN), and Bell nonlocality (as quantified by the CHSH inequality) as measures, we analyze the interplay between anisotropy parameters, magnetic fields, and te
arXiv:2601.14547v2 Announce Type: replace Abstract: The increasing number of control lines connecting quantum processors to external electronics constitutes a major bottleneck in the realization of large-scale quantum computers. Frequency-division multiplexing is expected to enable control of multiple qubits through a single microwave cable; however, interference from off-resonant microwave tones hinders precise qubit control. Here, we propose an active interference suppression method for freque
arXiv:2602.18354v2 Announce Type: replace Abstract: Recent advances in quantum photonics have enabled increasingly robust protocols in optical phase estimation, achieving precisions beyond the standard quantum limit and approaching the Heisenberg limit. While intrinsic losses hinder the realization of unconditional super-sensitivity, reaching quantum advantage, defined as sensitivity surpassing that of any classical counterpart with identical resources, remains achievable. Here we experimentally
arXiv:2602.20270v3 Announce Type: replace Abstract: Resonant inelastic X-ray scattering (RIXS) is the workhorse experimental technique for probing the structural degradation of higher-capacity cathode materials. However, the interpretation of experimental spectra is challenging due to the lack of accurate simulations. In this work, we propose a quantum algorithm for simulating the RIXS spectrum of molecular clusters hypothesized to form in Li-excess cathodes. The algorithm uses quantum phase est
arXiv:2602.21518v2 Announce Type: replace Abstract: In this paper, we will provide a complete derivation of the decoherence rate for a magnetic nanoparticle in quantum superposition in the presence of the fluctuating electromagnetic field in a thermal background by using the fluctuation-dissipation theorem in the long-wavelength limit. The long-wavelength limit assumes that the superposition size is much smaller than the wavelength of the electromagentic filed fluctuations. We will extend this c
arXiv:2602.23888v2 Announce Type: replace Abstract: Understanding the aging behavior of Josephson junctions and the effect of annealing on junction resistances is important in building large-scale superconducting quantum processors. Here we study the effects of aging of Josephson junctions under different storage conditions from immediately after fabrication up to 2 to 3 months. We find that the aging curve follows a logarithmic curve, with the aging amplitude mainly determined by fabrication co
arXiv:2603.04566v2 Announce Type: replace Abstract: Multimode circuits provide an avenue for flexible control of single and multi-qubit gates. In this work we implement a multimode circuit known as a trimon integrated in a planar geometry. The trimon features three transmon-like modes with strong all-to-all $ZZ$ coupling. We demonstrate high fidelity operations on the trimon, achieving flexible control of its rich state space. This includes qubit rotations conditioned on one or both other qubits
arXiv:2603.08762v2 Announce Type: replace Abstract: We present a scalable formal verification methodology for Quantum Phase Estimation (QPE) circuits. Our approach uses a symbolic qubit abstraction based on quantifier-free bit-vector logic, capturing key quantum phenomena, including superposition, rotation, and measurement. The proposed methodology maps quantum circuit functional behaviour from Hilbert space to a bit-vector domain. We develop formal properties aligned with this abstraction to en
arXiv:2311.11571v3 Announce Type: replace-cross Abstract: Graphical languages are a convenient shorthand to represent computation, with rewrite rules relating one graph to another. In contrast, proof assistants rely heavily on inductive datatypes, particularly when giving semantics to embedded languages. This creates obstacles to formally reasoning about graphical languages, since imposing an inductive structure obfuscates the diagrammatic nature of graphical languages, along with their correspo
arXiv:2502.07673v2 Announce Type: replace-cross Abstract: Open quantum systems are powerful effective descriptions of quantum systems interacting with their environments. Studying changes of Fock state probabilities can be intricate in this context since the prevailing description of open quantum dynamics is by master equations of the systems' reduced density matrices, which usually requires finding solutions for a set of complicated coupled differential equations. In this article, we show that
arXiv:2504.05126v2 Announce Type: replace-cross Abstract: Rydberg atom triangular arrays in an optical cavity serve as an ideal platform for understanding the interplay between geometric frustration and quantized photons. Using a large-scale quantum Monte Carlo method, we obtain a rich ground state phase diagram. Around half-filling, the infinite long-range light-matter interaction lifts the ground state degeneracy, resulting in a novel order-coexisted superradiant clock phase that completely de
arXiv:2504.11530v2 Announce Type: replace-cross Abstract: Moir\'e superlattices in semiconductors exhibit a rich variety of interaction-induced topological states, including quantum anomalous Hall (QAH) effects. A recent study hinted that twisted WSe2 homobilayer (tWSe2) could host a QAH state but lacked direct evidence of ferromagnetism, a key hallmark of this phase. Here, we report the first direct evidence of QAH states in tWSe2 with spontaneous ferromagnetism. Specifically, we employ polariz
arXiv:2506.12243v2 Announce Type: replace-cross Abstract: We study the possibility of discriminating between metric theories within the Parametrized Post-Newtonian formalism. In this approach, the two-dimensional quantum state of a massive quantum clock becomes, after propagating at low speed and in a weak gravitational field, a function of the post-Newtonian parameters and thus a signature of a metric theory. To discriminate among metric theories, we resort to quantum-state discrimination strat
arXiv:2509.02416v2 Announce Type: replace-cross Abstract: We describe in detail a mathematical framework in which statistical ensembles of hybrid classical-quantum systems can be properly described. We show how a maximum entropy principle can be applied to derive the microcanonical ensemble of hybrid systems. We investigate its properties, and in particular how the microcanonical ensemble and its marginal classical and quantum ensembles can be defined for arbitrarily small range of energies for
arXiv:2510.10525v2 Announce Type: replace-cross Abstract: We consider hierarchical quantum Hall edge states with $N$ modes and a spatially local quantum point contact (QPC). In general, the field of an injected anyon does not directly acquire the universal statistical phase $\theta$. Short-range inter-edge interactions split the universal anyon charge and phase into $N$ fractionalized charges associated with nonuniversal phases $\pi\delta_m$. In contrast, their sum $\delta=\sum_{m=1}^N\delta_m$,
arXiv:2510.20592v3 Announce Type: replace-cross Abstract: We consider Fractional Quantum Hall (FQH) edges with a spatially local Quantum Point Contact (QPC). Within the Unified Nonequilibrium Perturbative (UNEP) framework, without assumptions on the underlying Hamiltonian $H_{0}$ for the edges, we search for the associated backscattering DC current and noise compatible with the anyonic time exchange (ATE) constraint with a phase $\bar{\theta}$. For that, we infer a nonequilibrium fluctuation-dis
arXiv:2511.01430v2 Announce Type: replace-cross Abstract: Stimulated Raman scattering (SRS) microscopy has emerged as a powerful technique for probing the spatiotemporal dynamics of molecular bonds with exceptional sensitivity, resolution, and speed. However, classically, its performance remains fundamentally constrained by optical shot noise, which imposes a strict limit on detection sensitivity and speed. Here, we demonstrate a quantum-enhanced SRS microscopy platform that circumvents this bar
arXiv:2511.02683v3 Announce Type: replace-cross Abstract: Ever since gravity-induced entanglement (GIE) experiments have been proposed as a witness of the quantum nature of gravity, more and more theories of classical gravity coupled to quantum matter have been shown to predict GIE, despite the existence of several theory-independent no-go theorems purportedly claiming that it should not be possible. This note explains why this is possible, and why this makes the study GIE experiments, and low-e
arXiv:2511.14664v2 Announce Type: replace-cross Abstract: As is intrinsic to the fundamental goal of quantum computing, classical simulation of quantum algorithms is notoriously demanding in resource requirements. Nonetheless, simulation is critical to the success of the field and a requirement for algorithm development and validation, as well as hardware design. GPU-acceleration has become standard practice for simulation, and due to the exponential scaling inherent in classical methods, multi-
arXiv:2512.18449v3 Announce Type: replace-cross Abstract: We develop a symmetry-adapted multipolar $\mathbf{k}\cdot\mathbf{p}$ theory close to the bulk $\Gamma$ point for time-reversal-symmetric, noncentrosymmetric $C_{3v}$ crystals in the strong atomic spin-orbit-coupling ($jj$-coupling) limit. Using a $j\in\{1/2,3/2,5/2\}$ multiplet basis appropriate for heavy-element \textit{p}- and \textit{d}-bands, we systematically construct all symmetry-allowed spin-orbit coupling terms up to fifth order
arXiv:2602.05924v3 Announce Type: replace-cross Abstract: Measurement plays a crucial role in a quantum system beyond just learning about the system state: it changes the post-measurement state and hence influences the subsequent time evolution; further, measurement can even create entanglement in the post-measurement conditional state. In this work, we study how careful choice of parameters for a typical measurement process on cold atoms systems -- phase contrast imaging -- has a strong impact
arXiv:2602.18080v2 Announce Type: replace-cross Abstract: The real-time evolution of strongly interacting matter remains a frontier of fundamental physics, as classical simulations are hampered by exponential Hilbert space growth and rapid, unmanageable growth of quantum entanglement. This study reports the quantum simulation of hadron dynamics within a (1 + 1)-dimensional SU(2) lattice gauge theory using a 156-qubit IBM superconducting processor. Leveraging a hardware-efficient Loop-String-Hadr
arXiv:2603.10242v1 Announce Type: new Abstract: Existing high performance blockchains verify one signature per transaction on the critical path, which creates O(N) verification cost, high hardware pressure, and difficult post quantum migration. This paper presents ACE Runtime, a ZKP native execution layer built on identity authorization separation. We replace per transaction signature checks with lightweight HMAC attestations in the hot path, then generate one aggregated zero knowledge finality
arXiv:2603.10274v1 Announce Type: new Abstract: Embedded cryptography stands or falls on entropy quality, yet small devices have few trustworthy sources and little tolerance for heavyweight protocols. We build a Quantum Entropy as a Service (QEaaS) system that moves QRNG-derived entropy from a Quantis device to ESP32-class clients over post-quantum-secured channels. On the server side, the design exposes two paths: direct quantum entropy through a custom OpenSSL provider and mixed entropy throug
arXiv:2603.10692v1 Announce Type: new Abstract: While Secure Aggregation (SA) protects update confidentiality in Cross-silo Federated Learning, it fails to guarantee aggregation integrity, allowing malicious servers to silently omit or tamper with updates. Existing verifiable aggregation schemes rely on heavyweight cryptography (e.g., ZKPs, HE), incurring computational costs that scale poorly with model size. In this paper, we propose a lightweight architecture that shifts from extrinsic cryptog
arXiv:2603.11006v1 Announce Type: new Abstract: In this paper, we present a laboratory study focused on the impact of post-quantum cryptography (PQC) algorithms on multiple layers of stateful HTTP over TLS transactions: the TCP handshake, the intermediate TCP-TLS layer, the TLS handshake, the intermediate TLS layer, and the HTTP application layer. To this end, we propose a laboratory architecture that emulates a real-world setup in which a load test of up to 100 transactions per second is sent t
IBM researchers are collaborating with the developers of Signal and Threema to design cryptographic systems capable of resisting future quantum attacks. The partnership aims to adapt messaging protocols and encryption schemes to protect against "harvest now, decrypt later" threats, where adversaries store encrypted data today to crack it once quantum machines become powerful enough. This [...] The post IBM, Signal, and Threema Partner to Fortify Messaging Against Quantum Threats appeared first o
RIKEN and IBM have successfully executed a closed-loop hybrid workflow utilizing the full capacity of the Fugaku supercomputer and an on-premises IBM Quantum Heron processor. This demonstration represents a milestone in Quantum-Centric Supercomputing (QCSC), where the entirety of a pre-exascale classical system—comprising 158,976 nodes and over 7.6 million cores—worked in continuous tandem with quantum hardware. [...] The post RIKEN and IBM Demonstrate Quantum-Centric Supercomputing at Scale app
JIJ Europe Ltd., the UK subsidiary of JIJ Inc., has commenced a collaborative project with ORCA Computing, bp, and the National Quantum Computing Centre (NQCC) under the SparQ programme. The consortium aims to validate a quantum–classical hybrid optimization workflow for the Unit Commitment problem, a core challenge in the energy sector involving the start-up and [...] The post JIJ Europe Collaborates with ORCA Computing, bp, and NQCC on Energy Optimization appeared first on Quantum Computing Re
Nature Communications, Published online: 12 March 2026; doi:10.1038/s41467-026-70520-1 This work studies van der Waals InSe crystals grown on China space station. Microgravity growth condition annihilates interlayer stacking-faults in InSe, activates its intrinsic sliding ferroelectricity and enhances the super linear emission property.
Nature Communications, Published online: 12 March 2026; doi:10.1038/s41467-026-70648-0 Single photon detectors are essential for various quantum and imaging applications. Here, the authors report graphene bolometers able to detect single near-infrared photons at temperatures up to 1.2 K with intrinsic quantum efficiency up to 87%, dark count < 1 per second and effective noise equivalent power down to 2 × 10−22 W/$$\sqrt{{{{\rm{Hz}}}}}$$ Hz.
A Stone demitiu 370 funcionários nesta terça-feira (10). A empresa diz tratar-se de ajuste pontual em sua estrutura como "parte do processo contínuo de simplificação e ganho de eficiência". O sindicato de tecnologia vê relação com a substituição de trabalhadores por IA ( inteligência artificial ). Leia mais (03/11/2026 - 18h57)
Insider Brief PRESS RELEASE — Xanadu Quantum Technologies Inc. (“Xanadu”), a leading photonic quantum computing company, today announced that it has entered negotiations with the Government of Canada and the Government of Ontario for support for Project OPTIMISM, an initiative to establish advanced semiconductor and photonic manufacturing capabilities for the quantum technology supply chain in […]
Executivos de usinas e entidades do setor sucroenergético apontam, reservadamente, que o endividamento elevado da Raízen se deu, sobretudo, à busca de novas tecnologias para o seu negócio, como a produção de etanol de segunda geração. Nesta terça-feira (10), a companhia entrou com um pedido de recuperação extrajudicial para reestruturar cerca de R$ 65 bilhões em dívidas . Leia mais (03/11/2026 - 18h12)
A Microsoft declarou apoio ao processo da Anthropic contra o Pentágono, alertando que as medidas "drásticas" e "sem precedentes" contra a startup de IA teriam "amplas ramificações negativas" para a indústria de tecnologia dos Estados Unidos . Leia mais (03/11/2026 - 17h45)
Xanadu Quantum Technologies has partnered with the Applied Research Laboratory for Intelligence and Security (ARLIS) at the University of Maryland to develop security standards for quantum computing. Sponsored by the Secretary of the Air Force’s SEQCURE (Securing Experimental Quantum Computing Usage in Research Environments) program, the project evaluates the implementation of Zero Trust Architecture (ZTA) [...] The post Xanadu Partners with ARLIS for Quantum Zero Trust Architecture appeared fir
Xanadu Quantum Technologies has partnered with the Electronics and Telecommunications Research Institute (ETRI) of South Korea on a two-year research project focused on fault-tolerant quantum computing (FTQC). Supported by a grant from the South Korean government, the collaboration aims to advance the software infrastructure necessary to design and optimize complex quantum algorithms. The project builds [...] The post Xanadu and ETRI Partner for Fault-Tolerant Quantum Algorithm Design appeared f
Light-emitting structures that curl off the chip surface could enable advanced displays, high-speed optical communications, and larger-scale quantum computers.
IonQ and the University of Cambridge have entered into a research agreement to establish the IonQ Quantum Innovation Centre. Based at the Ray Dolby Centre within the Cavendish Laboratory, the facility is designed to facilitate the commercialization of quantum technologies and the expansion of intellectual property. The partnership integrates interdisciplinary research across physics, engineering, computer [...] The post IonQ and University of Cambridge Establish Quantum Innovation Centre appeare
Pushed down to a certain scale, the laws of physics seem to fall apart. Astrid Eichhorn, a leader in an area of study called asymptotic safety, thinks we just need to push a little further. The post Where Some See Strings, She Sees a Space-Time Made of Fractals first appeared on Quanta Magazine
Author(s): Bingzi Huo, Kunkun Wang, Dengke Qu, Junjing Xing, Xiang Zhan, Xiaojian Huang, Huixia Gao, Lei Xiao, and Peng Xue Sequential sharing of quantum nonlocality enables multiparty collaborative information processing, which is typically realized through unsharp measurements in previous studies. By contrast, we experimentally demonstrate that the sequential sharing of quantum nonlocality can be observed using only pr… [Phys. Rev. Lett. 136, 100201] Published Wed Mar 11, 2026
Author(s): Wei-Xuan Chang, Shuai Yin, Shi-Xin Zhang, and Zi-Xiang Li Various exotic phenomena emerge in nonequilibrium quantum many-body systems. The Mpemba effect, denoting the situation where a hot system freezes faster than a colder one, is a counterintuitive nonequilibrium phenomenon that has attracted enduring interest for more than half a century. In this Lette… [Phys. Rev. Lett. 136, 100403] Published Wed Mar 11, 2026
Author(s): Aleksas Mazeliauskas and Tilman Enss Hydrodynamic attractors characterize hydrodynamiclike evolution in strongly interacting systems, independent of initial conditions or microscopic details, outside the conventional hydrodynamic regime. They explain why hydrodynamic models apply to high-energy nuclear collisions, but so far have only … [Phys. Rev. Lett. 136, 103402] Published Wed Mar 11, 2026
Author(s): Johanne Bratland Tjernshaugen, Martin Tang Bruland, and Jacob Linder Electric control over magnetic interactions at the level of individual spins is relevant for a variety of quantum applications, such as qubits, memory, and sensor functionality. We show here that spin lattices and magnon gaps can be controlled with a supercurrent. Remarkably, a spin-polarized superc… [Phys. Rev. Lett. 136, 106001] Published Wed Mar 11, 2026
Author(s): Li-Shuo Liu, Kai Shao, Hai-Dong Li, Xiangang Wan, Wei Chen, and D. Y. Xing Altermagnets hold great potential for spintronic applications, yet their intrinsic spin dynamics and associated transport properties remain largely unexplored. Here, we investigate spin-resolved quantum transport in a multiterminal setup based on a $d$-wave altermagnet. It is found that the altermag… [Phys. Rev. Lett. 136, 106301] Published Wed Mar 11, 2026
Author(s): Yongxin Zeng, Allan H. MacDonald, and Nemin Wei Equilibrium interlayer exciton condensation is common in bilayer quantum Hall systems and is characterized by spontaneous phase coherence between isolated layers. It has been predicted that similar physics can occur in the absence of a magnetic field in some two-dimensional semiconductor bilayers. I… [Phys. Rev. Lett. 136, 106602] Published Wed Mar 11, 2026
Author(s): Thomas F. Allard, Jaime E. Sustaeta-Osuna, Francisco J. García-Vidal, and Paloma A. Huidobro Photonic media modulated periodically in time, termed photonic time crystals (PTCs), have attracted considerable attention for their ability to open momentum bandgaps hosting amplifying modes. These momentum gaps, however, generally appear only at the system’s parametric resonance condition which co… [Phys. Rev. Lett. 136, 106903] Published Wed Mar 11, 2026
More than a century before quantum mechanics was born, Irish mathematician William Rowan Hamilton stumbled onto an idea that would quietly foreshadow one of the deepest truths in physics. While studying the paths of light rays and moving objects, Hamilton noticed a striking mathematical similarity between them and used it to develop a powerful new framework for mechanics. At the time, it seemed like a clever analogy—but decades later, as scientists uncovered the strange wave-particle nature of l
Nature Physics, Published online: 11 March 2026; doi:10.1038/s41567-026-03205-7 Disentangling intertwined orders in quantum materials is challenging. Now, photoemission spectroscopy experiments show that magnetic fields can be used to disentangle such orders in a kagome superconductor.
Author(s): Diego Blas, Jorge Casalderrey-Solana, David Mateos, and Mikel Sanchez-Garitaonandia Neutron star mergers provide a unique laboratory for the study of strong-field gravity coupled to quantum chromodynamics in extreme conditions. The frequencies and amplitudes of the resulting gravitational waves encode invaluable information about the merger. Simulations to date have shown that thes… [Phys. Rev. Lett. 136, 101401] Published Tue Mar 10, 2026
Author(s): Pavel A. Nosov, Zhaoyu Han, and Eslam Khalaf A unified theory explains the recent discovery of superconductivity and reentrant integer quantum anomalous Hall states in twisted MoTe 2 in terms of the disorder-broadened Landau-Hofstadter bands of doped anyons. [Phys. Rev. Lett. 136, 106501] Published Tue Mar 10, 2026
Author(s): Masashi Kumazaki, Azimjon Temurjonov, Takaaki Jinno, Yukihiro Watanabe, Taku Matsuhita, Yoshiaki Kobayashi, and Yasuhiro Shimizu Dirac semimetals provide a new platform for the quantum Hall effect at low magnetic fields. In the presence of strong spin-orbit coupling, a spin-split Landau level is expected to enhance the bulk quasiparticle excitation. Here we report NMR spectroscopy that site selectively probes dynamic spin sus… [Phys. Rev. Lett. 136, 106601] Published Tue Mar 10, 2026
Author(s): Tian-Le Wang, Peng Wang, Ze-An Zhao, Sheng Zhang, Ren-Ze Zhao, Xiao-Yan Yang, Hai-Feng Zhang, Zhi-Fei Li, Yuan Wu, Liang-Liang Guo, Yong Chen, Hao-Ran Tao, Lei Du, Chi Zhang, Zhi-Long Jia, Wei-Cheng Kong, Peng Duan, Ming Gong, and Guo-Ping Guo A zigzag qubit configuration that enables noise-resilient state transfer and entanglement generation between distant qubits is analyzed and demonstrated on a superconducting quantum processor. [PRX Quantum 7, 010348] Published Tue Mar 10, 2026
One of the key challenges in building a robust quantum network is the efficient distribution of entanglement and mitigating the detrimental effects of noise, which limit the information transmission rate of quantum channels. In this work, we address these challenges by utilizing the superposition of trajectories and indefinite causal orders. We demonstrate that the effects of amplitude damping can be mitigated using a bit-flip channel, while phase damping can be countered with phase-flip noise.
Every second, hundreds to thousands of molecules move through thousands of nuclear pores in each of your cells. A new high-definition view reveals the machine in action. The post Disorder Drives One of Nature’s Most Complex Machines first appeared on Quanta Magazine
Author(s): Thomas Iadecola In quantum many-body systems with kinetically constrained dynamics, the Hilbert space can split into exponentially many disconnected subsectors, a phenomenon known as Hilbert-space fragmentation. These subsectors can be viewed as protecting classical information about the initial state. We show that… [Phys. Rev. Lett. 136, 100401] Published Mon Mar 09, 2026
Author(s): Léon Carde, Ronan Gautier, Nicolas Didier, Alexandru Petrescu, Joachim Cohen, and Alexander McDonald In this Letter, we use path integral techniques to predict the switching rate in a single-mode bistable open quantum system. While analytical expressions are well-known to be accessible for systems subject to Gaussian noise obeying classical detailed balance, we extend this approach to a class of op… [Phys. Rev. Lett. 136, 100402] Published Mon Mar 09, 2026
Author(s): Zhongfu Li, Qingyang Mo, Oubo You, Qingdong Yang, Shaojie Ma, Xinhua Wen, Yuanjiang Xiang, and Shuang Zhang Weyl orbits are topologically protected cyclotron trajectories that connect Weyl nodes of opposite chiralities in momentum space, coupling bulk chiral Landau levels and surface Fermi arcs to produce quantum oscillations under static magnetic fields. While well-studied in condensed matter systems, th… [Phys. Rev. Lett. 136, 103801] Published Mon Mar 09, 2026
Author(s): Jerry Huang, Laura Lewis, Hsin-Yuan Huang, and John Preskill Fundamental limits of adaptive measurement in quantum many-body systems are established, showing when logarithmic-sample prediction fails and how optimal algorithms can still be achieved. [PRX Quantum 7, 010347] Published Mon Mar 09, 2026
Physicists have long struggled to unite quantum mechanics—the theory governing tiny particles—with Einstein’s theory of gravity, which explains the behavior of stars, planets, and the structure of the universe. Researchers at TU Wien have now taken a new step toward that goal by rethinking one of relativity’s core ideas: the paths particles follow through curved spacetime, known as geodesics. By creating a quantum version of these paths—called the q-desic equation—the team showed that particles
The diverse landscape of quantum computing modalities and software frameworks poses significant challenges for evaluating performance across a range of computational tasks and applications. Benchmarking procedures for quantum computers are often intricate and difficult to reproduce for end-users, quantum algorithm developers, and quantum resource providers. This challenge is compounded by the emergence of analog, non-universal approaches to quantum information processing, including quantum annea
Modular and networked quantum architectures can scale beyond the qubit count of a single device, but executing a circuit across modules requires implementing non-local two-qubit gates using shared entanglement (ebits) and classical communication, making ebit cost a central resource in distributed execution. The resulting distributed quantum circuit (DQC) problem is combinatorial, motivating prior heuristic approaches such as hypergraph partitioning. In this work, we decouple module allocation fr
A straightforward conjecture about runners moving around a track turns out to be equivalent to many complex mathematical questions. Three new proofs mark the first significant progress on the problem in decades. The post New Strides Made on Deceptively Simple ‘Lonely Runner’ Problem first appeared on Quanta Magazine
Author(s): Kate L. Fenwick, Frédéric Bouchard, Guillaume Thekkadath, Philip J. Bustard, Duncan England, and Benjamin J. Sussman Researchers can adjust the frequency and bandwidth of single photons inside an optical fiber, which will be useful for future quantum networks. [Phys. Rev. Lett. 136, 090803] Published Fri Mar 06, 2026
Author(s): Astrid Eichhorn and Marc Schiffer $CPT$ symmetry is at the heart of the standard model of particle physics and experimentally very well tested, but expected to be broken in some approaches to quantum gravity. It thus becomes pertinent to explore which of the two alternatives is realized: (i) $CPT$ symmetry is emergent, so that it is… [Phys. Rev. Lett. 136, 091501] Published Fri Mar 06, 2026
Author(s): Alejandro Vivas-Viaña and Carlos Sánchez Muñoz Frequency-resolved photon detection can unlock hidden information in the light emitted by open quantum systems, enabling metrology that approaches fundamental limits using standard laboratory tools. [PRX Quantum 7, 010346] Published Fri Mar 06, 2026
Author(s): Šimon Bräuer, Jan Provazník, Vojtěch Kala, and Petr Marek Superposed coherent states are central to quantum technologies, yet their reliable identification remains a challenge, especially in noisy or resource-constrained settings. We introduce a novel, directly measurable criterion for detecting catlike features in quantum states. The criterion is based on… [Phys. Rev. Lett. 136, 090205] Published Thu Mar 05, 2026
Author(s): Shion Yamashika and Filiberto Ares One of the manifestations of the quantum Mpemba effect (QME) is that a tilted ferromagnet exhibits faster restoration of the spin-rotational symmetry after a quantum quench when starting from a larger tilt angle. This phenomenon has recently been observed experimentally in an ion trap that simulates… [Phys. Rev. Lett. 136, 090402] Published Thu Mar 05, 2026
Author(s): Zhen Huang, Gunhee Park (박건희), Garnet Kin-Lic Chan, and Lin Lin Coupled Lindblad pseudomode theory is a promising approach for simulating non-Markovian quantum dynamics on both classical and quantum platforms, with dynamics that can be realized as a quantum channel. We provide theoretical evidence that the number of coupled pseudomodes only needs to scale as $\t… [Phys. Rev. Lett. 136, 090403] Published Thu Mar 05, 2026
Author(s): Benoît Ferté, Davide Farci, and Xiangyu Cao An analysis of a quantum-to-classical transition reveals two distinct notions of classicality. [Phys. Rev. Lett. 136, 090404] Published Thu Mar 05, 2026
Author(s): Junxuan Wen, Zongping Gong, and Takahiro Sagawa We establish a symmetry classification for a general class of quantum feedback control. For successive feedback control with a nonadaptive sequence of bare measurements (i.e., with positive Kraus operators), we prove that the symmetry classification collapses to the ten-fold ${\mathrm{AZ}}^{†}$ clas… [Phys. Rev. Lett. 136, 090802] Published Thu Mar 05, 2026
Author(s): Farokh Mivehvar Landau levels (LLs) are the massively degenerate discrete energy spectra of charged particles in a transverse magnetic field, and they lie at the heart of many intriguing phenomena, such as the integer and fractional quantum Hall effects as well as quantized vortices. In this Letter, we consider cou… [Phys. Rev. Lett. 136, 093602] Published Thu Mar 05, 2026
Author(s): Xin Lu, Jia-Xin Zhang, Lukas Homeier, Shou-Shu Gong, D. N. Sheng, and Zheng-Yu Weng Inspired by the recent experimental advances in cold atom quantum simulators, we explore the experimentally implemented bosonic $t–{t}^{′}–J$ model on the square lattice using large-scale density matrix renormalization group simulations. By tuning the doping level $δ$ and hopping ratio ${t}^{′}/t$, … [Phys. Rev. Lett. 136, 096506] Published Thu Mar 05, 2026
Author(s): Laura Clinton, Toby S. Cubitt, Raul Garcia-Patron, Ashley Montanaro, Stasja Stanisic, and Maarten Stroeks Adaptation of classical phase-retrieval yields a method for quantum phase estimation that enables simpler implementations with reduced gate count, especially under connectivity constraints, and resilience to shot noise. [PRX Quantum 7, 010345] Published Thu Mar 05, 2026
Quantum computing offers the potential for exponential speed-ups for classically intractable problems, yet quantum programming is still susceptible to bugs. Classical debugging methods are often inadequate, as quantum mechanical principles make state inspection disruptive and classical simulation has exponential time complexity. This survey explores the landscape of quantum assertions as a key technique for identifying and locating bugs in quantum programs. We classify these techniques into two
Columnist Natalie Wolchover explores whether applied category theory can be “green” math. The post Can the Most Abstract Math Make the World a Better Place? first appeared on Quanta Magazine
Author(s): Benchi Zhao, Yu-Ao Chen, Xuanqiang Zhao, Chengkai Zhu, Giulio Chiribella, and Xin Wang Quantum state purification protocols, which mitigate noise by converting multiple copies of noisy quantum states into fewer copies with a lower noise level, have applications in quantum communication and computation with imperfect devices. Here, we systematically study the task of state purification… [Phys. Rev. Lett. 136, 090203] Published Wed Mar 04, 2026
Author(s): Keming He, Chengkai Zhu, Hongshun Yao, Jinguo Liu, Yinan Li, and Xin Wang Quantum state purification, a process that aims to recover a state closer to a system’s principal eigenstate from multiple copies of an unknown noisy quantum state, is crucial for restoring noisy states to a more useful form in quantum information processing. Fault-tolerant quantum computation relie… [Phys. Rev. Lett. 136, 090204] Published Wed Mar 04, 2026
Author(s): Matteo Votto, Marko Ljubotina, Cécilia Lancien, J. Ignacio Cirac, Peter Zoller, Maksym Serbyn, Lorenzo Piroli, and Benoît Vermersch We present and test a protocol to learn the matrix-product operator (MPO) representation of an experimentally prepared quantum state. The protocol takes as input classical shadows corresponding to local randomized measurements, and outputs the tensors of an MPO maximizing a suitably defined fidelity… [Phys. Rev. Lett. 136, 090801] Published Wed Mar 04, 20
Author(s): Ameya Chavda, Daniel McLoughlin, Sebastian Mizera, and John Staunton We propose that the broad architecture of the renormalization group flow in quantum field theories is, at least in part, fixed by unitarity. The precise statement is summarized in the unitarity flow conjecture , which states that the nonlinear $S$-matrix identities obtained by imposing unitarity impl… [Phys. Rev. Lett. 136, 091604] Published Wed Mar 04, 2026
Author(s): Giacomo Morpurgo, Laurent Sanchez-Palencia, and Thierry Giamarchi We investigate the localization transition of interacting particles in a one-dimensional system with colored-noise disorder, where backward scattering processes are suppressed beyond a cutoff. Employing two complementary renormalization group procedures, we derive the phase diagram and reveal a sign… [Phys. Rev. Lett. 136, 096504] Published Wed Mar 04, 2026
Author(s): Vijaysankar Kalappattil, Chuanpu Liu, Zhijie Chen, Vipul Sharma, Kai Liu, Jinke Tang, Steven S.-L. Zhang, and Mingzhong Wu Quantum oscillations in nonlinear electrical transport reveal the geometry and spin orientation of the Fermi surface in the Dirac semimetal α-Sn. [Phys. Rev. Lett. 136, 096603] Published Wed Mar 04, 2026
Author(s): Yuzhen Zhang, Sagar Vijay, Yingfei Gu, and Yimu Bao Approximate k -designs can be generated from shallow circuits with limited magic gates as a new efficient and realistic approach to random unitaries. [PRX Quantum 7, 010344] Published Wed Mar 04, 2026
Author(s): Bhaskar Mukherjee, Christopher J. Turner, Marcin Szyniszewski, and Arijeet Pal Teleportation of quantum information over long distances requires robust entanglement on the macroscopic scale. The construction of highly energetic eigenstates with tunable long-range entanglement can provide a new medium for information transmission. Using a symmetric superposition of the antipoda… [Phys. Rev. Lett. 136, 090401] Published Tue Mar 03, 2026
Author(s): Kyungmin Lee, Minwook Kyung, Yung Kim, Jagang Park, Hansuek Lee, Joonhee Choi, C. T. Chan, Jonghwa Shin, Kun Woo Kim, and Bumki Min We report the first direct mapping of the frequency-resolved local density of states (LDOS) in a photonic time crystal (PTC) implemented as an array of time-periodically modulated LC resonators at microwave frequencies. Broadband white noise probes the system and yields an LDOS line shape near the m… [Phys. Rev. Lett. 136, 093802] Published Tue Mar 03, 20
Author(s): Andrew Hardy, Priyanka Mukhopadhyay, M. Sohaib Alam, Robert Konik, Layla Hormozi, Eleanor Rieffel, Stuart Hadfield, João Barata, Raju Venugopalan, Dmitri E. Kharzeev, and Nathan Wiebe Fault-tolerant simulation of scalar field theory is improved using a finite-volume approach for computing scattering processes, and its potential for practical implementation is explored. [PRX Quantum 7, 010343] Published Tue Mar 03, 2026
Belden Inc., a global provider of network infrastructure solutions, has joined forces with Quantum Security & Defence to accelerate the adoption of quantum-secure standards across critical industries.
Israeli quantum computing startup Classiq has teamed up with NVIDIA and the BMW Group to optimise the architecture of electric vehicle mechatronic systems using quantum algorithms and GPU-accelerated simulation.
French quantum computing startup C12, a spin-off from the Physics Laboratory of the Ecole Normale Superieure in Paris, has closed an €18 million funding round to develop carbon nanotube-based universal quantum computers.
Dutch quantum technology company Qblox has closed a $26 million Series A round led by Quantonation and Invest-NL, funding the expansion of its modular, scalable quantum control stack technology.
So what would IBM a leading Quantum Computing company and French Quantum platform leader Pasqal, announce a plan to join forces, what IBM already has it's own Quantum computing platform?
The quantum world just got a lot more interesting. Quantinuum, the largest integrated quantum computing company globally, has introduced the industry’s first quantum computer boasting an impressive 56 trapped-ion qubits
The United States of America, in its most recent Entity List under the Export Administration Regulation (EAR), has added 37 quantum research organizations from China restricting them from gaining access to resources from the US. Of the 37 organizations, 22 are China’s top firms within the quantum te
A new chip called "Xiaohong" is the biggest quantum computing chip developed in China so far. It was developed by a team of scientists at the Center for Excellence in Quantum Information and Quantum Physics, part of the Chinese Academy of Sciences (CAS).
Quantum computing is an evolving field that has sparked a huge global interest due to its massive potential and capabilities. It remains one of the biggest frontiers of technology in the 21st century as governments, institutions, and private companies are all investing in the space and rightfully po
Aramco, a leading global integrated energy and chemicals company that creates value and economic benefits to people and communities worldwide by providing energy supply to them has partnered with Pasqal, a global leader in neutral atom quantum computing technology to deploy the first quantum compute
Finland via the Finnish Technical Resource Center (VTT) is working with CSC, operators of LUMI, a pan-European supercomputer located in CSC’s data center in Kajaani, Finland to develop quantum algorithm for future applications.
Pasqal, a leading quantum computing company that develops neutral atoms quantum processors in 2D and 3D arrays to bring the realisation of practical quantum computing applications in solving real-world
The Jülich Supercomputing Centre (JSC) at Forschungszentrum Jülich has partnered with Goethe-University Frankfurt, ParTec, and Quantum Machines to develop a 10+ superconducting qubit system and integrate it into their high-performance computing (HPC) infrastructure.
Amazon and IQM have joined forces to establish IQM’s quantum computing service on Amazon Web Service (AWS) via Amazon Braket, increasing the platform's usefulness. IQM is a global leader in the development of superconducting quantum computers, building…..
According to The Record, a White House top official, Anne Neuberger, the White House’s top cyber advisor, has reported that the National Institute for Standards and Technology (NIST) will release post-quantum or quantum-resistant cryptography algorithms in the coming weeks.
Automated guided vehicles (AGVs) are portable robots that follow along marked lines or wires on the floor or use radio waves, vision cameras, magnets, or lasers for navigation to transport heavy materials or items within industrial facilities.
Quantum computing is an evolving field that applies quantum mechanics to solve complex computational problems. These problems are deep numeric and systemic problems that are found in almost all areas of life. Consider communication, for example, its applications cut across fibre optics, point-to-poi
A new study published in the journal Science details how researchers from MIT brought two layers of ultracold magnetic atoms at 50 nanometers -the closest distance ever achieved- and its importance in the development of quantum technology
Quantum key distribution (QKD) is a secure communication process that involves the exchange of encryption keys between two particles within a quantum state in a safe and guaranteed environment. This can enable the encryption (securing) and description (revealing) of messages shared between those two
The potentials of quantum technology are enormous with applications spanning across healthcare, mobility, sensing, defence and military, aviation, computing, communications, technology, and so on. These and many more are industries that could be revolutionised by quantum technology once it achieves
IBM has been a world leader in the field of quantum technology for years and they have developed various solutions to prove their placement as an industry leader.
These companies have led the revolution of transforming supercomputers that solve computational problems sequentially using bits to quantum computers that have the potential to solve complex computational problems on multiple quantum states using qubits.
Quantum Technology is one of the most difficult fields to understand due to the level of complexities that are involved in it. Understanding concepts in any quantum-related field takes years of study to get a full grasp of it as well as years of research to come up with meaningful progress.
Poznań Supercomputing and Networking Center (PSNC), ORCA Computing, and NVIDIA partner to accelerate the development of Hybrid Quantum Classical High-Performance Computing.
It has been rather fascinating to read the latest dispatch from the U.S. Department оf Energy, which has just announced an chunky infusion оf $7 million into five quantum tech firms under the Phase II Small Business Innovation Research (SBIR) and Small Business Technology Transfer (STTR)
The future holds immense promise for quantum technology across various fields, including cryptography and security, optimisation, drug discovery, machine learning…..
The electron’s spin is truly a perfect candidate for a quantum bit (qubit) – a basic unit of information in quantum computing. Many researchers are trying to find suitable qubits for specific applications. One of them is a research group led by Josep Orenstein at the Lawrence Berkeley National Labor
The Australian Government has announced that it will be investing in PsQuantum, a US company based in Palo Alto California. This investment is valued at 940M AUD (650M USD) and the structure will be a mixture of grant, equity, and loans - here is why…
Purdue University is bringing together leading researchers to collaborate with industry, government, and academia to develop chip-scale quantum systems to power the technology of the future
As quantum technology reaches its potential it has the likelihood of being able to crack the majority of existing security codes because of the way that such security systems are mathematically constructed - this is how its fixed
PsiQuantum has recently unveiled its latest advancements in quantum computing tools: the Quantum Resource Estimation Format (QREF) and the beta version of Bartiq, a Quantum Resource Estimator.
A network architecture by Photonics Inc and Zurich Instruments may help scale quantum networks around the globe and provides quantum algorithm services to solve complex computational problems.
The Universities of Melbourne and Manchester have collaborated to develop an ultra-pure Silicon chip for quantum computing. This breakthrough research could enhance the potential for the production of scalable and accurate quantum computers.
What is Quantum Computing? Quantum computing is the application of quantum mechanical theories in technology to solve complex problems (defined as problems with multi-dimensional variables) and have information stored as quantum bits or qubits.
Just a few weeks after announcing a €2.5M European Union grant, Paris based Welinq have formed a partnership with French Quantum Computer Hardware company Pasqal to interconnect quantum processors in an effort to address the current scalability issue of quantum computation. Welinq uses quantum memo
In the world оf computing, the juxtaposition оf analog and quantum paradigms opens a fascinating discourse оn the nature оf computation itself. Analog computers, relics оf computing history, are making a surprising comeback, interfacing with the cutting-edge realm оf quantum computing. Th
This article delves into the essence of quantum methodologies and frameworks, exploring their structure, operational mechanisms, potential applications, benefits, and the challenges they present.
Quantum optics, a field at the intersection of quantum physics and optical science, is driving a revolution in how we process, transmit, and manipulate information. By harnessing the quantum behaviors of light, this technology opens new frontiers in communication, computing, and sensing, presenting
