量子电子学报2026，Vol.43Issue(3)：431-442,12.DOI:10.3969/j.issn.1007-5461.2026.03.010
基于被动光源监测的相位匹配量子密钥分发
Phase-matching quantum key distribution protocol based on passive light source monitoring
摘要
Abstract
A phase-matching quantum key distribution(PM-QKD)protocol based on passive light source monitoring(PLSM)is proposed in this work.In this protocol,the response results of local detectors in the PLSM module are used to estimate the probability distribution of the light source,thereby avoiding the security issues introduced by the active light source monitoring(ALSM)scheme.Simulation results show that,when non-ideal light sources and modulation errors are taken into account,the performance of the proposed PLSM-PM-QKD protocol is significantly better than that of the ALSM-PM-QKD protocol.In other scenarios,the key rate and maximum transmission distance of the PLSM-PM-QKD protocol are nearly identical to those of the ALSM-PM-QKD protocol,and both of them are extremely close to those of the standard PM-QKD protocol.Additionally,the impact of the asymmetric channels and finite-length effects of the proposed protocal on the key rate performance is also analyzed.关键词
量子光学/相位匹配量子密钥分发协议/非理想光源/被动光源监测Key words
quantum optics/phase-matching quantum key distribution protocol/non-ideal light source/passive light source monitoring分类
数理科学引用本文复制引用
吕磅,汪溢镭,朱雪阳,王译锋,冯宝..基于被动光源监测的相位匹配量子密钥分发[J].量子电子学报,2026,43(3):431-442,12.基金项目
国网浙江省电力有限公司科技项目(B311DS23000M) （B311DS23000M）
