Estimation of key rate after setting dead time

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

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.

Keywords: dead time key rate quantum key distribution

Received: 05 December 2011
Revised: 27 December 2011
Accepted manuscript online:

PACS:

02.60.Cb

(Numerical simulation; solution of equations)

Fund: Project supported by the National High Technology Research and Development Program of China (863 Program) (Grant No. 2009AA01A349).

Corresponding Authors: Yin Zhen-Qiang, Wang Shuang
E-mail: yinzheqi@mail.ustc.edu.cn; wshuang@ustc.edu.cn

Cite this article:

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 2012 Chin. Phys. B 21 060202

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Estimation of key rate after setting dead time

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