量子电子学报2024，Vol.41Issue(6)：891-900,10.DOI:10.3969/j.issn.1007-5461.2024.06.006
免相位后选择双场量子密钥分发协议光源错误分析
Analysis of light source errors of no-phase-postselection twin-field type quantum key distribution protocal
摘要
Abstract
No-phase-postselection twin-field quantum key distribution(NPP TF-QKD)protocal is a variant of twin-field quantum key distribution(TF-QKD)protocal.It not only inherits TF-QKD's advantage of overcoming the constraint of a point-to-point QKD link,but also simplifies its security proof.Its practical feasibility has been demonstrated in experiments.However,it has been assumed that the protocol's light source is precisely controllable,but that is unavailable in practical applications due to the drawbacks of practical devices and environmental noises.In this paper,the influence of the light source intensity fluctuation,an example of light source errors,on NPP TF-QKD protocol's performance is discussed both for the symmetrical and asymmetrical channels.The simulation results show that light source errors can decrease the protocol's secure key rate and shorten the transmission distance of NPP TF-QKD protocal.关键词
量子光学/量子密钥分发/光源错误/光源强度波动/光子数分布Key words
quantum optics/quantum key distribution/light source error/light source intensity fluctuation/photon number distribution分类
数理科学引用本文复制引用
陆文皓,吴梓涵,马均瑶,余杨,赵生妹..免相位后选择双场量子密钥分发协议光源错误分析[J].量子电子学报,2024,41(6):891-900,10.基金项目
国家自然科学基金(62375140,61871234) （62375140,61871234）
