Measurement-device-independent quantum key distribution with insecure sources
arXiv:2107.07803 · doi:10.1364/OL.447234
Abstract
Measurement-device-independent quantum key distribution (MDI-QKD) can eliminate all detector side-channel loopholes and has shown excellent performance in long-distance secret keys sharing. Conventional security proofs, however, require additional assumptions on sources and that can be compromised through uncharacterized side channels in practice. Here, we present a general formalism based on reference technique to prove the security of MDI-QKD against any possible sources imperfection and/or side channels. With this formalism, we investigate the asymptotic performance of single-photon sources without any extra assumptions on the state preparations. Our results highlight the importance of transmitters' security.
5 pages, 3 figures, comments are welcome
References in corpus (15)
- Device-independent security of quantum cryptography against collective attacks
- Secure Quantum Key Distribution
- Hacking commercial quantum cryptography systems by tailored bright illumination
- Measurement device independent quantum key distribution over 404 km optical fibre
- Measurement-device-independent quantum key distribution over 200 km
- Long-distance free-space measurement-device-independent quantum key distribution
- Improved statistical fluctuation analysis for measurement-device-independent quantum key distribution with three-intensity decoy-state method
- Discrete-phase-randomized coherent state source and its application in quantum key distribution
- Gigahertz measurement-device-independent quantum key distribution using directly modulated lasers
- Performance and security of 5 GHz repetition rate polarization-based Quantum Key Distribution
- Mismatched-basis statistics enable quantum key distribution with uncharacterized qubit sources
- Measurement-Device-Independent Quantum Key Distribution with Leaky Sources
- Experimental Three-State Measurement-Device-Independent Quantum Key Distribution with Uncharacterized Sources
- Practical Quantum Key Distribution Secure Against Side-Channels
- Efficient passive measurement-device-independent quantum key distribution