基于波分复用技术的测量设备无关量子密钥分发

J4 ›› 2017, Vol. 34 ›› Issue (1): 46-53.

基于波分复用技术的测量设备无关量子密钥分发

毛钱萍¹,赵生妹²,王乐³,钱陈辰¹,陈汉武⁴

1南京邮电大学信号处理与传输研究院，江苏南京 210003； 2南京工业大学计算机科学与技术学院，江苏南京 210009； 3南京邮电大学宽带无线通信与传感网技术教育部重点实验室，江苏南京 210003； 4东南大学计算机科学与工程学院，江苏南京 210096

收稿日期:2015-12-22 修回日期:2016-05-30 出版日期:2017-01-28 发布日期:2017-01-28
通讯作者: 赵生妹（1968-），女，博士，教授，主要从事量子通信、量子信息方面的研究. E-mail:zhaosm@njupt.edu.cn (通信联系人)
作者简介:毛钱萍（1978-），女，博士生，主要从事量子密钥方面的研究。E-mail：maoqp@163.com
基金资助:
Supported by National Natural Science Foundation of China（国家自然科学基金，61271238，61475075），Specialized Research Fund for Doctoral Program of Higher Education of China（教育部高等学校博士学科点专项科研基金，20123223110003），Scientific Research and Innovation Program for the General University Graduate Students of Jiangsu Province（江苏省普通高校研究生科研创新计划项目，KYLX15_0832）

Measurement-device-independent quantum key distribution based on wavelength division multiplexing technology

MAO Qianping1，2, ZHAO Shengmei1，3, WANG Le1, QIAN Chenchen1, CHEN Hanwu4

1 Institute of Signal Processing and Transmission,Nanjing University of Posts and Telecommunications, Nanjing 210003, China； 2 College of Computer Science and Technology,Nanjing Tech University, Nanjing 210009, China； 3 Key Laboratory of Broadband Wireless Communication and Sensor Network Technology, Nanjing University of Posts and Telecommunications, Ministry of Education, Nanjing 210003, China； 4 School of Computer Science and Engineering, Southeast University, Nanjing 210096, China

Received:2015-12-22 Revised:2016-05-30 Published:2017-01-28 Online:2017-01-28

摘要/Abstract

摘要： 基于诱骗态MDI-QKD协议，提出了一种使用波分复用技术（WDM）的MDI-QKD协议。通信双方Alice 和Bob同时发送不同波长的多路信号，通过光复用器将多路信号合并，由单根光纤进行长距离传输。第三方Charlie通过光解复用器将多路合成信号分开，分别对每一路进行贝尔态测量。理论分析结果表明协议的密钥生成率与传输距离、复用路数及平均光子数目有关；数值仿真结果表明：在不增加系统传输设备的前提下，该协议极大提高了系统的密钥生成率。当传输距离为150 km，单路的密钥生成率为0.17 Mbps，而20路、40路复用的密钥生成率可达3.34 Mbps、6.68 Mbps。

关键词: 量子光学；密钥生成率；波分复用；测量设备无关量子密钥分发

Abstract: Based on the decoy state MDI-QKD protocol, a MDI-QKD protocol using wavelength division multiplexing (WDM) technique is proposed. Both sides of communications, Alice and Bob, transmit multiple-channel signals with different wavelengths at the same time. The multi-channel signals are merged with optical multiplexer, and then a single fiber is adopted for long distance transmission. The third party, Charlie, separates the multi-channel synthetic signal with optical demultiplexer, and Bell-state measurement is performed for each sub-channel signal. Theoretical analysis results show that the key generation rate relates to the transmission distance, number of multiplexing and mean photon numbers. Numerical simulation results show that the proposed protocol greatly improves the system key generation rate. When the transmission distance is 150 km, the single-channel key generation rate is 0.17 Mbps. The key generation rates with 20 channels, 40 channels multiplexing are 3.34 Mbps, 6.68 Mbps.

Key words: quantum optics; key generation rate; wavelength division multiplexing; measurement-device-independent quantum key distribution

中图分类号:

O431.2

毛钱萍赵生妹王乐钱陈辰陈汉武. 基于波分复用技术的测量设备无关量子密钥分发[J]. J4, 2017, 34(1): 46-53.

MAO Qianping1，2, ZHAO Shengmei1，3, WANG Le1, QIAN Chenchen1, CHEN Hanwu4 . Measurement-device-independent quantum key distribution based on wavelength division multiplexing technology[J]. J4, 2017, 34(1): 46-53.

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