https://doi.org/10.1140/epjd/s10053-021-00311-4
Regular Article – Quantum Information
Analysis of three-intensity decoy-state phase-matching quantum key distribution
Analysis of three-intensity PM-QKD
1
School of Science, Beijing University of Posts and Telecommunications, 100876, Beijing, China
2
State Key Laboratory of Information Photonics and Optical Communication, Beijing University of Posts and Telecommunications, 100876, Beijing, China
Received:
9
September
2021
Accepted:
12
November
2021
Published online:
27
November
2021
Phase-matching quantum key distribution (PM-QKD) protocol has been widely researched since it was proposed. This scheme is proven to beat the linear bound. In this paper, the performance of three-intensity decoy-state PM-QKD is discussed. The effects of various parameters on the performance of transmission system with statistical fluctuation and source error are analyzed by numerical simulation. The results show that the protocol has good performance. The effects of signal state intensity and decoy-state intensity on key rate are analyzed, and the optimal key rate and the intensity of signal and decoy states are given.
© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2021
