A new synchronization scheme based on time division multiplexing and wavelength division multiplexing technology for practical quantum key distribution system

Three clock synchronization schemes for a quantum key distribution system are compared experimentally through the outdoor fibre and the interaction physical model of the the clock signal and the the quantum signal in the quantum key distribution system is analysed to propose a new synchronization sc...

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Published inChinese physics B Vol. 20; no. 5; pp. 73 - 79
Main Author 钟平平 张华妮 王金东 秦晓娟 刘颂豪
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.05.2011
Subjects
Clocks
Fibre
Outdoor
Photons
Synchronism
Synchronization
Time division multiplexing
Wavelength division multiplexing
光纤非线性
分配系统
时分复用
时钟信号
时钟同步
比特错误率
波分复用技术
量子密钥
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ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/20/5/050307

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Summary:Three clock synchronization schemes for a quantum key distribution system are compared experimentally through the outdoor fibre and the interaction physical model of the the clock signal and the the quantum signal in the quantum key distribution system is analysed to propose a new synchronization scheme based on time division multiplexing and wavelength division multiplexing technology to reduce quantum bits error rates under some transmission rate conditions, The proposed synchronization scheme can not only completely eliminate noise photons from the bright background light of the the clock signal, but also suppress the fibre nonlinear crosstalk.
Bibliography:quantum key distribution, clock synchronization, wavelength division multiplexing, timedivision multiplexing
Three clock synchronization schemes for a quantum key distribution system are compared experimentally through the outdoor fibre and the interaction physical model of the the clock signal and the the quantum signal in the quantum key distribution system is analysed to propose a new synchronization scheme based on time division multiplexing and wavelength division multiplexing technology to reduce quantum bits error rates under some transmission rate conditions, The proposed synchronization scheme can not only completely eliminate noise photons from the bright background light of the the clock signal, but also suppress the fibre nonlinear crosstalk.
Zhong Ping-Ping, Zhang Hua-Ni, Wang Jin-Dong,Qing Xiao-juan,wei Zheng-jun,Chen Suai,Liu Song-Hao a） Key Laboratory of Photonic Information Technology of Ouangdong Higher Education Institutes SIPSE ~ LQIT South China Normal University~ Guangzhou 510006, China b） Guangdong Radio ＆ TV University, Guangzhou 510091, China
11-5639/O4
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ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/5/050307