Estimation of key rate after setting dead time

doi:10.1088/1674-1056/21/6/060202

中国物理B ›› 2012, Vol. 21 ›› Issue (6): 60202-060202.doi: 10.1088/1674-1056/21/6/060202

Estimation of key rate after setting dead time

刘东^a, 银振强^a, 王双^a, 王粉梅^b, 陈巍^a, 韩正甫^a

a. Key Laboratory of Quantum Information of the Chinese Academy of Sciences,University of Science and Technology of China, Hefei 230026, China;
b. Army Officer Academy of PLA, Hefei 230031, China

收稿日期:2011-12-05 修回日期:2011-12-27 出版日期:2012-05-01 发布日期:2012-05-01
基金资助:
Project supported by the National High Technology Research and Development Program of China (863 Program) (Grant No. 2009AA01A349).

Estimation of key rate after setting dead time

Liu Dong(刘东)^a), Yin Zhen-Qiang(银振强)^a)†, Wang Shuang(王双)^a)‡ger Wang Fen-Mei(王粉梅)^b), Chen Wei(陈巍)^a) and Han Zheng-Fu(韩正甫)^a)

a. Key Laboratory of Quantum Information of the Chinese Academy of Sciences,University of Science and Technology of China, Hefei 230026, China;
b. Army Officer Academy of PLA, Hefei 230031, China

Received:2011-12-05 Revised:2011-12-27 Online:2012-05-01 Published:2012-05-01
Contact: Yin Zhen-Qiang, Wang Shuang E-mail:yinzheqi@mail.ustc.edu.cn; wshuang@ustc.edu.cn
Supported by:
Project supported by the National High Technology Research and Development Program of China (863 Program) (Grant No. 2009AA01A349).

摘要/Abstract

摘要： The estimation of key rate is an important aspect of the quantum key distribution process, especially in the use of dead time. In this paper, we demonstrate a numerical simulation to estimate the average detection probability and the key rate. Using our method, the estimated average detection probability is better than the previous result. Besides, we can easily find the best dead time, especially when considering the impact of after pulse.

关键词: dead time, key rate, quantum key distribution

Abstract: The estimation of key rate is an important aspect of the quantum key distribution process, especially in the use of dead time. In this paper, we demonstrate a numerical simulation to estimate the average detection probability and the key rate. Using our method, the estimated average detection probability is better than the previous result. Besides, we can easily find the best dead time, especially when considering the impact of after pulse.

Key words: dead time, key rate, quantum key distribution

中图分类号: (Numerical simulation; solution of equations)

02.60.Cb

刘东, 银振强, 王双, 王粉梅, 陈巍, 韩正甫. Estimation of key rate after setting dead time[J]. 中国物理B, 2012, 21(6): 60202-060202.

Liu Dong(刘东), Yin Zhen-Qiang(银振强), Wang Shuang(王双) Wang Fen-Mei(王粉梅), Chen Wei(陈巍) and Han Zheng-Fu(韩正甫) . Estimation of key rate after setting dead time[J]. Chin. Phys. B, 2012, 21(6): 60202-060202.

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Estimation of key rate after setting dead time

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