摘要
我们在场能够检测光子的一个计划基于改进微分阶段移动(DPS ) 在量钥匙分发(QKD ) 期间数没有特洛伊木马攻击的系统。一个时间多路的察觉者(TMD ) 为光子数字决定被来临。二个纤维环被用于象散布钥匙一样检测光子数字。长期的稳定被二面法拉第镜子(FM ) 在鲍勃的地点保证自动地补偿极化缺点。我们的试验性的学习(90 km QKD 被完成) 显示如此的一个系统是稳定的并且固定哪个将近到达一个单个光子计划的性能。
We present a scheme that is capable of detecting photon numbers during the quantum key distribution （QKD） based on an improved differential phase shift （DPS） system without Trojan horse attack. A time-multiplexed detector （TMD） is set in for the photon-number resolution. Two fibre loops are used for detecting photon numbers as well as distributing keys. The long-term stabilization is guaranteed by two Faraday mirrors （FM） at Bob＇s site to automatically compensate for polarization defect. Our experimental study （90km QKD is completed） indicates that such a system is stable and secure which nearly reaches the performance of a single photon scheme.
关键词
量子密匙分布
微分相位
分布模式
光子
the power-law exponents, precipitation, durative, abrupt precipitation change
