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基于波长-模式双复用的量子保密通信系统

Quantum Private Communication System Based on Wavelength-Mode Division Co-Multiplexing

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摘要

提出并设计了一种基于波长-模式双复用的量子保密通信系统, 介绍了波长-模式双复用的基本原理, 使用Optisystem搭建了系统模型并进行了10次发送实验, 获取并分析了信号的时域波形和频谱图, 验证了传输过程中信号波长和线偏振模式的稳定性, 实现了系统中基于双不等臂马赫-曾德尔干涉仪方案的量子密钥分发过程, 获得了经典光信号的误比特率、眼图以及品质因数。结果表明, 此量子保密通信系统能够融合两种复用方式的优势, 扩大信道容量, 提高信号间的隔离度和正交性, 有效减小非线性效应和信号间串扰, 较好地保护量子-经典信号同传过程中的量子信号, 证明了该量子保密通信系统有效可行。

Abstract

A quantum private communication system based on the wavelength-mode division co-multiplexing is put forward and designed. The basic principle of wavelength-mode division co-multiplexing is introduced. The transmission experiment is performed for 10 times with the system model built by Optisystem. The time domain waveform and spectra of signals are obtained and analyzed. Stabilities of wavelength and linear polarization mode of signals in the transmission are tested. The quantum key distribution based on the scheme of double unbalanced Mach-Zehnder interferometers is realized in the system. The error bit rate, eye diagram and quality factor of classical optical data are obtained. The results show that this quantum private communication system converges the advantages of two multiplexing forms. The channel capacity is broadened, and the isolation and the orthogonality between signals are enhanced. In addition, the nonlinear effects and the crosstalk between signals are reduced efficiently, and the quantum signal is well maintained in the coexisting transmission process of quantum-classical signals. The proposed quantum private communication system is confirmed to be effective and applicable.

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中图分类号:O431.1;O431.2

DOI:10.3788/aos201737.0927001

所属栏目:激光器与激光光学

基金项目:国家自然科学基金(61601497)

收稿日期:2017-05-05

修改稿日期:2017-05-10

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罗均文:空军工程大学信息与导航学院, 陕西 西安 710077
李云霞:空军工程大学信息与导航学院, 陕西 西安 710077
蒙 文:空军工程大学信息与导航学院, 陕西 西安 710077
石 磊:空军工程大学信息与导航学院, 陕西 西安 710077
魏家华:空军工程大学信息与导航学院, 陕西 西安 710077
薛 阳:空军工程大学信息与导航学院, 陕西 西安 710077

联系人作者:罗均文(khd65482@163.com)

备注:罗均文(1992-), 男, 硕士研究生, 主要从事光纤通信和量子通信方面的研究。

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引用该论文

Luo Junwen,Li Yunxia,Meng Wen,Shi Lei,Wei Jiahua,Xue Yang. Quantum Private Communication System Based on Wavelength-Mode Division Co-Multiplexing[J]. Acta Optica Sinica, 2017, 37(9): 0927001

罗均文,李云霞,蒙 文,石 磊,魏家华,薛 阳. 基于波长-模式双复用的量子保密通信系统[J]. 光学学报, 2017, 37(9): 0927001

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