光纤信道压力对实际量子密钥分发误码率的影响  

Influence of Fibre Channel Pressure on Actual Quantum Bit Error Rate

作　　者：吴佳楠[1,2] 魏荣凯[1,3] 陈丽[3] 周成[3] 朱德新[1,3] 宋立军[3] 

机构地区：[1]长春大学计算机科学技术学院,长春130022 [2]吉林大学通信学院,长春130012 [3]长春大学量子技术实验室,长春130022

出　　处：《吉林大学学报（理学版）》2015年第6期1287-1290,共4页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:61373051;61175023);教育部春晖计划项目(批准号:Z201259);吉林省科技发展计划项目(批准号:20130521016JH;20140204004GX;20140101206JC-18;20130101179JC-24;25;26;20140101187JC);吉林省教育厅项目(批准号:2012256);长春市科技计划项目(批准号:2014217)

摘　　要：基于BB84协议原理,构建压力环境下偏振编码的点对点实际量子密钥分发系统,进行光纤信道压力作用下的量子密钥分发实验,并采用半正定算子测量方法建立误码率分析模型.实验结果表明:相同作用力下,误码率随作用角度的增加而增大,与仿真结果相同;相同作用角下,误码率随作用力的增加呈平缓的震荡上升趋势,但当作用力超过某一临界值时,误码率会迅速提高,逼近极限值,迫使量子密钥分发系统重新建立连接.An actual peer to peer quantum key distribution experimental system of polarization encoding was built based on BB84 protocol under pressure testing conditions.Fibre channel pressure experiment about quantum key distribution was completed.The theoretical model of quantum bit error rate was established with positive operator valued measurement method.The research results show that under the same pressure,bit error rate increased with the increase of angle,the result was as theoretical arithmetic expected;and at the same angle,the bit error rate showed a gentle shock upward trend with the increase of pressure,and when the pressure exceeded a critical value,the bit error rate increased rapidly,approaching the limit,forcing the quantum key distribution system to reestablish a connection.

关 键 词：量子密钥分发 诱骗态 信号态 量子误码率 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]