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Proceedings Paper

Synchronization schemes for continuous-variable quantum key distribution
Author(s): Changjiang Liu; Yijia Zhao; Yichen Zhang; Ziyong Zheng; Song Yu
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Paper Abstract

Clock synchronization is crucial for a practical continuous-variable quantum key distribution system to precisely get the measurement result. Three different synchronization schemes for continuous-variable quantum key distribution system are presented to demonstrate the optimal scheme. The performance of synchronization scheme is evaluated by measuring the excess noise which is the critical parameter for the continuous-variable quantum key distribution system. The experiment results show that distilling the synchronization signal from the local oscillator has the simplest physical implemention and superior effect of synchronization, but a stronger local oscillator is required. Transmitting synchronization signal and quantum signal in the same fiber by wave-length division multiplex is also a fine way to provide stable clock when we take no account of the phsical device and wave-length source.

Paper Details

Date Published: 5 January 2017
PDF: 5 pages
Proc. SPIE 10244, International Conference on Optoelectronics and Microelectronics Technology and Application, 1024408 (5 January 2017); doi: 10.1117/12.2264528
Show Author Affiliations
Changjiang Liu, Beijing Univ. of Posts and Telecommunications (China)
Yijia Zhao, Beijing Univ. of Posts and Telecommunications (China)
Yichen Zhang, Beijing Univ. of Posts and Telecommunications (China)
Ziyong Zheng, Beijing Univ. of Posts and Telecommunications (China)
Song Yu, Beijing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 10244:
International Conference on Optoelectronics and Microelectronics Technology and Application
Shaohua Yu; Jose Capmany; Yi Luo; Yikai Su; Songlin Zhuang; Yue Hao; Akihiko Yoshikawa; Chongjin Xie; Yoshiaki Nakano, Editor(s)

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