Quantum Key Distribution (QKD)

QuintessenceLabs (QLabs) is a quantum cybersecurity company founded in 2008 as a spin-out from the Australian National University. The company produce...

AIT Austrian Institute of Technology operates the Centre for Digital Safety and Security and has been a long-standing European QKD research and commer...

QEYnet is building the world's first commercial satellite-based quantum key distribution network. Founded in 2016 by spacecraft engineers and quantum ...

Quantum Bridge Technologies develops quantum key distribution systems and quantum networking hardware, providing the physical infrastructure layer for...

evolutionQ is a quantum-safe cybersecurity company founded in 2015, specialising in quantum risk assessment and post-quantum cryptography solutions. T...

QuantumCTek is China's leading quantum security company, founded in 2009 as a spin-out from Pan Jianwei's group at USTC and listed on the Shanghai STA...

Qasky is a Chinese quantum communications equipment manufacturer providing QKD systems and quantum cryptography products for enterprise and metropolit...

Guoke Quantum is the Chinese Academy of Sciences-affiliated quantum network operator that builds and runs provincial quantum backbone infrastructure a...

VeriQloud is a French quantum networking company providing quantum key distribution software, quantum network management systems, and quantum-safe com...

Welinq is a pioneering quantum networking company developing quantum memory technology and quantum repeater infrastructure. The company participates i...

Rohde & Schwarz Cybersecurity is a division of the German technology group Rohde & Schwarz, providing high-assurance network security and encryption s...

qutools is a German quantum technology company providing quantum key distribution systems and quantum optics equipment. The company has launched a Qua...

QNu Labs is India's leading quantum security company, started at IIT Madras in 2016 and builder of India's first quantum key distribution system. The ...

HEQA Security is an Israeli quantum security company listed among the globally established players in the quantum cryptography and QKD markets. The co...

PacketLight Networks is an Israeli optical networking company and a top player in the quantum key distribution market. The company provides optical tr...

QuantLR develops cutting-edge quantum cryptography solutions integrating quantum key distribution with encrypted transport to create quantum-safe netw...

Toshiba is a global leader in quantum key distribution, having pioneered quantum-safe technologies since 1999. In April 2025, Toshiba announced a worl...

NEC Corporation is a major player in quantum security, partnering with NICT and Toshiba on real-world QKD demonstrations. On 16 September 2025, NEC un...

Q*Bird is a Dutch quantum networking company providing QKD and quantum communications solutions. The company is a partner in the Dutch government's Qu...

SpeQtral is a Singapore-based quantum communications company and leader in satellite-based QKD technology. SpeQtral and SPTel were jointly appointed b...

SPTel is a Singapore telecommunications company and co-operator of Singapore's National Quantum-Safe Network Plus (NQSN+) alongside SpeQtral. SPTel pr...

Singtel launched the region's first Hybrid Quantum-Safe Network integrating quantum key distribution with post-quantum cryptography. Singtel's Hybrid ...

SK Telecom has been at the forefront of quantum encryption research since establishing its quantum technology research centre in 2011, and in 2018 acq...

KT Corporation is a major Korean telecommunications company that demonstrated a Hybrid Quantum-Secure VPN Service combining QKD and PQC in late 2024, ...

LuxQuanta is a European quantum key distribution pioneer and ICFO spin-off founded in 2021. The company develops continuous-variable QKD (CV-QKD) syst...

ID Quantique (IDQ) is the global leader in quantum-safe security solutions, founded in 2001 at the University of Geneva. IDQ provides QKD systems (Cla...

KETS Quantum Security is a Bristol-based QKD company founded in 2016, developing quantum key distribution IP based on coherent semiconductor photonic ...

Qubitekk is an American quantum security company with UK operations providing quantum key distribution systems using entangled photon pairs. The compa...

Quantum Xchange provides the first quantum-secured commercial network in the United States via its Phio Trusted Xchange (TX) key distribution system a...

MagiQ Technologies was founded in 1999 by Bob Gelfond and is one of the first companies to commercialise a quantum cryptography product. The company p...

NuCrypt is an American quantum key distribution company providing QKD test equipment and quantum cryptography systems for research and enterprise appl...