中国物理B ›› 2012, Vol. 21 ›› Issue (10): 100307-100307.doi: 10.1088/1674-1056/21/10/100307

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Experimental demonstration of passive decoy state quantum key distribution

张阳, 王双银, 振强, 陈巍, 梁文烨, 李宏伟, 郭光灿, 韩正甫   

  1. Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026, China
  • 收稿日期:2012-04-12 修回日期:2012-06-21 出版日期:2012-09-01 发布日期:2012-09-01
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grants Nos. 2011CBA00200 and 2011CB921200), the National Natural Science Foundation of China (Grant Nos. 60921091 and 61101137), and the China Postdoctoral Science Foundation (Grant Nos. 20100480695 and 2012M511419).

Experimental demonstration of passive decoy state quantum key distribution

Zhang Yang (张阳), Wang Shuang (王双银), Yin Zhen-Qiang (振强), Chen Wei (陈巍), Liang Wen-Ye (梁文烨), Li Hong-Wei (李宏伟), Guo Guang-Can (郭光灿), Han Zheng-Fu (韩正甫)   

  1. Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences, Hefei 230026, China
  • Received:2012-04-12 Revised:2012-06-21 Online:2012-09-01 Published:2012-09-01
  • Contact: Wang Shuang, Yin Zhen-Qiang E-mail:wshuang@ustc.edu.cn; yinzheqi@mail.ustc.edu.cn
  • Supported by:
    Project supported by the National Basic Research Program of China (Grants Nos. 2011CBA00200 and 2011CB921200), the National Natural Science Foundation of China (Grant Nos. 60921091 and 61101137), and the China Postdoctoral Science Foundation (Grant Nos. 20100480695 and 2012M511419).

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摘要： Passive decoy state quantum key distribution (PDS-QKD) has advantages in high-speed scenarios. We propose a modified model to simulate the PDS-QKD with a weak coherent light source based on Curty's theory [Opt. Lett.34 3238 (2009)]. The modified model can provide better performance in a practical PDS-QKD system. Moreover, we report an experimental demonstration of the PDS-QKD of over 22.0-dB channel loss.

关键词: quantum key distribution, passive decoy state method

Abstract: Passive decoy state quantum key distribution (PDS-QKD) has advantages in high-speed scenarios. We propose a modified model to simulate the PDS-QKD with a weak coherent light source based on Curty's theory [Opt. Lett.34 3238 (2009)]. The modified model can provide better performance in a practical PDS-QKD system. Moreover, we report an experimental demonstration of the PDS-QKD of over 22.0-dB channel loss.

Key words: quantum key distribution, passive decoy state method

中图分类号:  (Quantum cryptography and communication security)

  • 03.67.Dd