Quantum key distribution with correlated sources
arXiv:1908.08261 · doi:10.1126/sciadv.aaz4487
Abstract
In theory, quantum key distribution (QKD) offers information-theoretic security. In practice, however, it does not due to the discrepancies between the assumptions used in the security proofs and the behaviour of the real apparatuses. Recent years have witnessed a tremendous effort to fill the gap, but the treatment of correlations among pulses has remained a major elusive problem. Here, we close this gap by introducing a simple yet general method to prove the security of QKD with arbitrarily long-range pulse correlations. Our method is compatible with those security proofs that accommodate all the other typical device imperfections, thus paving the way towards achieving implementation security in QKD with arbitrary flawed devices. Moreover, we introduce a new framework for security proofs, which we call the reference technique. This framework includes existing security proofs as special cases and it can be widely applied to a number of QKD protocols.
References in corpus (4)
Cited by in corpus (41)
- Advances in device-independent quantum key distribution
- Experimental measurement-device-independent type quantum key distribution with flawed and correlated sources
- Experimental quantum e-commerce
- Security of device-independent quantum key distribution protocols: a review
- Security of quantum key distribution from generalised entropy accumulation
- Security of quantum key distribution with intensity correlations
- Securing practical quantum communication systems with optical power limiters
- Experimental demonstration of drone-based quantum key distribution
- Improved Finite-Key Security Analysis of Quantum Key Distribution Against Trojan-Horse Attacks
- Security of decoy-state quantum key distribution with correlated intensity fluctuations
- A Critical Analysis of Deployed Use Cases for Quantum Key Distribution and Comparison with Post-Quantum Cryptography
- Security of quantum key distribution with imperfect phase randomisation
- Practical Quantum Key Distribution Secure Against Side-Channels
- Twin-field quantum key distribution with fully discrete phase randomization
- Preparing a commercial quantum key distribution system for certification against implementation loopholes
- Characterisation of state-preparation uncertainty in quantum key distribution
- Discrete-variable quantum key distribution with homodyne detection
- Deep-Learning-Based Radio-Frequency Side-Channel Attack on Quantum Key Distribution
- Imperfect Phase-Randomisation and Generalised Decoy-State Quantum Key Distribution
- Experimental study of secure quantum key distribution with source and detection imperfections
- Robust twin-field quantum key distribution through sending-or-not-sending
- Measurement device-independent quantum key distribution with passive, time-dependent source side-channels
- Security of round-robin differential-phase-shift quantum key distribution protocol with correlated light sources
- Measurement-device-independent quantum key distribution with insecure sources
- Secret key rate bounds for quantum key distribution with non-uniform phase randomization
- Security framework for quantum key distribution with imperfect sources
- Security of the decoy-state BB84 protocol with imperfect state preparation
- Finite-key analysis of loss-tolerant quantum key distribution based on random sampling theory
- Sending or not sending twin-field quantum key distribution with distinguishable decoy states
- Quantum key distribution with imperfectly isolated devices
- Quantum key distribution with unbounded pulse correlations
- Intensity correlations in decoy-state BB84 quantum key distribution systems
- Loss-tolerant quantum key distribution with detection efficiency mismatch
- Differential-phase-shift QKD with practical Mach-Zehnder interferometer
- Numerical security analysis for quantum key distribution with partial state characterization
- Quantum key distribution overcoming practical correlated intensity fluctuations
- Simple and Rigorous Proof Method for the Security of Practical Quantum Key Distribution in the Single-Qubit Regime Using Mismatched Basis Measurements
- Quantum Key Distribution with Imperfections: Recent Advances in Security Proofs
- Source-independent quantum key distribution without pre-sending entanglement
- Security proofs for practical QKD: variations, techniques, gaps, and limitations
- Phase-correlation-free quantum key distribution source operating at gigahertz rates