Asymmetric Decoy State Measurement-Device-Independent Quantum Cryptographic Conferencing

Measurement-device-independent quantum cryptographic conferencing （MDI-QCC） protocol suggests an important scheme for practical multiparty quantum communication. As far as we know, MDI-QCC or MDI-quantum key distribution protocols always assume that the decoy state strategies used at each user＇s sid...

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Bibliographic Details
Published inChinese physics letters Vol. 34; no. 8; pp. 11 - 15
Main Author 陈瑞柯 鲍皖苏 包海泽 周淳 江木生 李宏伟
Format Journal Article
LanguageEnglish
Published 01.07.2017
Subjects
测量装置
状态
设备无关
诱骗
量子密码
量子密钥分配协议
量子通信
非对称
Online AccessGet full text
ISSN0256-307X
1741-3540
DOI10.1088/0256-307X/34/8/080301

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Summary:Measurement-device-independent quantum cryptographic conferencing （MDI-QCC） protocol suggests an important scheme for practical multiparty quantum communication. As far as we know, MDI-QCC or MDI-quantum key distribution protocols always assume that the decoy state strategies used at each user＇s side are the same. In this study, to mitigate the system complexity and to improve the performance of MDI-QCC protocol in the finite-key case, we propose an asymmetric decoy state method for MDI-QCC protocol, and present security analysis and numerical simulations. From numerical simulations, our protocol can achieve better performance in the finite-key case. That is, with a finite data size of 10111011, it can achieve nonzero secret key rate over 43.6km.
Bibliography:Rui-Ke Chen1,2, Wan-Su Bao1,2, Hai-Ze Bao1,2, Chun Zhou1,2, Mu-Sheng Jiang1,2, Hong-Wei Li1,2（1.Henan Key Laboratory of Quantum Information and Cryptography, Zhengzhou 450001;2.Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei 230026）
11-1959/O4
Measurement-device-independent quantum cryptographic conferencing （MDI-QCC） protocol suggests an important scheme for practical multiparty quantum communication. As far as we know, MDI-QCC or MDI-quantum key distribution protocols always assume that the decoy state strategies used at each user＇s side are the same. In this study, to mitigate the system complexity and to improve the performance of MDI-QCC protocol in the finite-key case, we propose an asymmetric decoy state method for MDI-QCC protocol, and present security analysis and numerical simulations. From numerical simulations, our protocol can achieve better performance in the finite-key case. That is, with a finite data size of 10111011, it can achieve nonzero secret key rate over 43.6km.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/34/8/080301