预报单光子源下的经典-量子信息共信道同传系统研究

J4 ›› 2015, Vol. 32 ›› Issue (4): 445-451.

预报单光子源下的经典-量子信息共信道同传系统研究

王宇帅，李云霞，石磊，东晨，蒙文，姬一鸣

空军工程大学信息与导航学院，陕西西安 710077

收稿日期:2014-08-26 修回日期:2014-10-03 出版日期:2015-07-28 发布日期:2015-08-04
通讯作者: 李云霞（1966-），女，教授，从事量子通信教学研究。 E-mail:yunxial@sohu.com
作者简介:王宇帅（1990-）研究生，主要研究方向为光纤量子通信。Email: wangyushuai90@sina.com
基金资助:
国家自然科学基金（61106068）

Scheme of Multiplexed Classical and Quantum Transmission System with a heralded single-photon source

Wang Yu-shuai, Li Yun-xia, Shi Lei, Dong Chen, Men Wen, Ji Yi-ming

Information and Navigation College, Air Force Engineering University, Xi’an 710077, China

Received:2014-08-26 Revised:2014-10-03 Published:2015-07-28 Online:2015-08-04

摘要/Abstract

摘要：

分析了密集波分复用下的经典-量子信息共信道同传系统噪声特性，提出基于预报单光子源的经典-量子信息共信道同传方案。与传统的弱相干光源相比，其可以更精确控制APD探测门限，进而实现时域滤波减少信道噪声干扰；并且可以通过控制探测器开启时间，有效避免空光子发送时的信道噪声及探测器暗计数影响。仿真结果表明，本方案提出的同传系统可有效抑制噪声干扰，与弱相干光源方案相比于更远距离达到误码率阈值，提升了安全通信距离，可作为远距离量子密钥通信共信道同传参考方案。

关键词: 量子光学, 共信道同传, 量子密钥分发, 预报单光子源, 时域滤波, 密集波分复用

Abstract:

This text analyzed the typical noise in the multiplexed system based on DWDM, proposing the scheme of multiplexed classical and quantum transmission system with a heralded single-photon source. Compared to weakly coherent pulses, it can accuracy control the threshold-detection, and then achieve temporal-filtering to reduce the noise jamming; On the other hand, it can control the opening time of APD to avoid the noise and dark counts. The simulation results showed that the scheme of multiplexed classical and quantum transmission system can depress the impact of various noise, reaching the threshold of bit error rate at a farther distance compared to a weak coherent source. So the scheme increased the secure communication distance which can be a reference program in remote quantum key distribution communications.

Key words: quantum optics, channel multiplexing, quantum key distribution, heralded single-photon source, temporal-filtering, dense wavelength division multiplexing

中图分类号:

TN918

王宇帅，李云霞，石磊，东晨，蒙文，姬一鸣. 预报单光子源下的经典-量子信息共信道同传系统研究[J]. J4, 2015, 32(4): 445-451.

Wang Yu-shuai, Li Yun-xia, Shi Lei, Dong Chen, Men Wen, Ji Yi-ming. Scheme of Multiplexed Classical and Quantum Transmission System with a heralded single-photon source[J]. J4, 2015, 32(4): 445-451.

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