传输距离对实际量子密钥分发系统的影响

吉林大学学报(理学版)

传输距离对实际量子密钥分发系统的影响

吴佳楠^1,2, 魏荣凯^1,2, 韩家伟^2,3, 王士刚^1,2, 刘桂霞³, 宋立军²

1. 长春大学计算机科学技术学院, 长春 130022; 2. 长春大学量子保密通信实验室, 长春 130022;3. 吉林大学计算机科学与技术学院, 长春 130012

收稿日期:2014-06-26 出版日期:2014-09-26 发布日期:2014-09-26
通讯作者: 宋立军 E-mail:ccdxslj@126.com

Influence of Actual Transmission Distance on Quantum Key Distribution System

WU Jianan^1,2, WEI Rongkai^1,2, HAN Jiawei^2,3,WANG Shigang^1,2, LIU Guixia³, SONG Lijun²

1. College of Computer Science and Technology, Changchun University, Changchun 130022, China；2. Quantum Cryptography Laboratory, Changchun University, Changchun 130022, China；3. College of Computer Science and Technology, Jilin University, Changchun 130012, China

Received:2014-06-26 Online:2014-09-26 Published:2014-09-26
Contact: SONG Lijun E-mail:ccdxslj@126.com

摘要/Abstract

摘要：

基于BB84协议原理, 搭建偏振编码的长距离点对点实际量子密钥分发实验系统. 利用该实验平台完成了5,10,15 km 3种不同传输距离的量子密钥分发实验, 并对系统主要参数实时采集进行数据分析. 实验结果表明：随着发送端与接收端量子光纤信道距离的增加, 在统计时间内, 系统分段成码率降低, 信号态和诱骗态误码率上升, 系统产生的密钥量降低.

关键词: 量子密钥分发, BB84协议, 诱骗态, 信号态, 误码率

Abstract:

A long distance peer to peer quantum key distribution experimental system of polarization encoding was built based on BB84 protocol. With the help
of this experimental platform, quantum key distribution experiment with 5,10,15 km three different transmission distances was completed and the main parameters of the system was collected in real time for data analysis. The experimental results show that with the increase of quantum fiber channel distance from sending end to receiving end, the system bit generation rate and the amount of key generated by the system would drop, the bit error rate of signal state and decoy state would increase within statistical time. The experimental results have theoretical and practical value for practical development of the longrange security quantum key distribution system.

Key words: quantum key distribution, BB84 protocol, decoy state; signal state, bit error rate

中图分类号:

TP393

吴佳楠, 魏荣凯, 韩家伟, 王士刚, 刘桂霞, 宋立军. 传输距离对实际量子密钥分发系统的影响[J]. 吉林大学学报(理学版), 2014, 52(05): 1014-1017.

WU Jianan, WEI Rongkai, HAN Jiawei,WANG Shigang, LIU Guixia, SONG Lijun. Influence of Actual Transmission Distance on Quantum Key Distribution System[J]. Journal of Jilin University Science Edition, 2014, 52(05): 1014-1017.

[1]	刘涛, 孟青, 韩建宁. 基于神经网络的计算机通信系统干扰信号分离[J]. 吉林大学学报(理学版), 2017, 55(06): 1545-1551.
[2]	吴佳楠, 魏荣凯, 陈丽, 周成, 朱德新, 宋立军. 光纤信道压力对实际量子密钥分发误码率的影响[J]. 吉林大学学报(理学版), 2015, 53(06): 1287-1290.
[3]	吴佳楠, 刘桂霞, 王士刚, 魏荣凯, 韩家伟, 宋立军. 基于BB84协议的量子保密通信网络流量控制策略[J]. 吉林大学学报(理学版), 2014, 52(01): 76-80.