Security of quantum key distribution with non-I.I.D. light sources
arXiv:1602.02914 · doi:10.1103/PhysRevA.93.042325
Abstract
Although quantum key distribution (QKD) is theoretically secure, there is a gap between the theory and practice. In fact, real-life QKD may not be secure because component devices in QKD systems may deviate from the theoretical models assumed in security proofs. To solve this problem, it is necessary to construct the security proof under realistic assumptions on the source and measurement unit. In this paper, we prove the security of a QKD protocol under practical assumptions on the source that accommodate fluctuation of the phase and intensity modulations. As long as our assumptions hold, it does not matter at all how the phase and intensity distribute nor whether or not their distributions over different pulses are independently and identically distributed (I.I.D.). Our work shows that practical sources can be safely employed in QKD experiments.
References in corpus (6)
- Secure Quantum Key Distribution
- Free-Space distribution of entanglement and single photons over 144 km
- Long term performance of the SwissQuantum quantum key distribution network in a field environment
- Statistical fluctuation analysis for measurement-device-independent quantum key distribution
- Finite-key security analysis of quantum key distribution with imperfect light sources
- Measurement-device-independent quantum key distribution for Scarani-Acin-Ribordy-Gisin 04 protocol
Cited by in corpus (11)
- Quantum key distribution with an efficient countermeasure against correlated intensity fluctuations in optical pulses
- Quantum key distribution with correlated sources
- Security of device-independent quantum key distribution protocols: a review
- Security of quantum key distribution with intensity correlations
- Quantum key distribution with setting-choice-independently correlated light sources
- Security of decoy-state quantum key distribution with correlated intensity fluctuations
- Characterisation of state-preparation uncertainty in quantum key distribution
- Sending or not sending twin-field quantum key distribution with distinguishable decoy states
- Layer-Wise Security Framework and Analysis for the Quantum Internet
- Phase-Matching Quantum Key Distribution without Intensity Modulation
- Mitigating the source-side channel vulnerability by characterization of photon statistics