Quantum simulation of molecular systems for threat agent identification and biosensor development.
What quantum computers can and cannot simulate today. Key areas include: VQE on NISQ hardware: ansatz design, parameter optimisation, and the barren plateau problem; Quantum phase estimation: the fault-tolerant approach and its qubit and gate requirements; Current limitations: approximately 20 active orbitals on NISQ versus thousands needed for weapons-relevant molecules.
Quantum-enhanced capability for CBRN defence. Key areas include: Molecular fingerprinting: quantum simulation for identifying spectroscopic signatures of threat agents; Reaction pathway modelling: predicting degradation products and environmental persistence of CW agents; Quantum sensing for biological agent detection: NV-centre magnetometry for molecular recognition.
Managing quantum capabilities under arms control. Key areas include: CWC Article VI: verification implications when quantum simulation enables novel agent design; BWC Article I: how quantum protein folding simulation intersects with biological weapons prohibition; Policy recommendations: export controls, classification boundaries, and international cooperation frameworks.
Strategic implications for CBRN defence programmes. Key areas include: Fault-tolerant quantum chemistry timeline: when simulation capability becomes defence-relevant; Investment priorities: detection applications (near-term) versus simulation capabilities (long-term).
Discuss this topic with senior peers.
