Improved statistical fluctuation analysis for measurement-device-independent quantum key distribution

被引：1
作者：
Hua-Jian Ding
Chen-Chen Mao
Chun-Mei Zhang
Qin Wang
机构：
[1] Nanjing University of Posts and Telecommunications,Institute of Quantum Information and Technology
[2] Nanjing University of Posts and Telecommunications,Key Lab of Broadband Wireless Communication and Sensor Network Technology
[3] Ministry of Education,undefined
来源：
Quantum Information Processing | 2018年 / 17卷
关键词：
Quantum key distribution; Statistical fluctuation analysis; Decoy state;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Measurement-device-independent quantum key distribution (MDI-QKD) is a promising protocol for realizing long-distance secret keys sharing. However, its key rate is relatively low when the finite-size effect is taken into account. In this paper, we consider statistical fluctuation analysis for the three-intensity decoy-state MDI-QKD system based on the recent work (Zhang et al. in Phys Rev A 95:012333, 2017) and further compare its performance with that of applying the Gaussian approximation technique and the Chernoff bound method. The numerical simulations demonstrate that the new method has apparent enhancement both in key generation rate and transmission distance than using Chernoff bound method. Meanwhile, the present work still shows much higher security than Gaussian approximation analysis.
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