Loss-tolerant measurement device independent quantum key distribution with reference frame misalignment  

作　　者：Jipeng Wang Zhenhua Li Zhongqi Sun Tianqi Dou Wenxiu Qu Fen Zhou Yanxin Han Yuqing Huang Haiqiang Ma 王吉鹏;李振华;孙仲齐;窦天琦;屈文秀;周芬;韩艳鑫;黄雨晴;马海强(School of Science and State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]School of Science and State Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications,Beijing 100876,China

出　　处：《Chinese Optics Letters》2022年第9期61-67,共7页中国光学快报（英文版）

基　　金：supported by the State Key Laboratory of Information Photonics and Optical Communications(Beijing University of Posts and Telecommunications)(No.IPOC2021ZT10);the National Natural Science Foundation of China(No.11904333);the Fundamental Research Funds for the Central Universities(No.2019XD-A02)。

摘　　要：Reference frame independent and measurement device independent quantum key distribution(RFI-MDI-QKD)has the advantages of being immune to detector side loopholes and misalignment of the reference frame.However,several former related research works are based on the unrealistic assumption of perfect source preparation.In this paper,we merge a loss-tolerant method into RFI-MDI-QKD to consider source flaws into key rate estimation and compare it with quantum coin method.Based on a reliable experimental scheme,the joint influence of both source flaws and reference frame misalignment is discussed with consideration of the finite-key effect.The results show that the loss-tolerant RFI-MDI-QKD protocol can reach longer key rate performance while considering the existence of source flaws in a real-world implementation.

关 键 词：quantum key distribution source flaw measurement device independence 

分 类 号：O413[理学—理论物理] TN918.4[理学—物理]