Improved model on asynchronous measurement-device-independent quantum key distribution with realistic devices

作     者：Mingshuo Sun Chun-Hui Zhang Rui Zhang Xing-Yu Zhou Jian Li Qin Wang 孙铭烁;张春辉;章睿;周星宇;李剑;王琴

作者机构：Institute of Quantum Information and TechnologyNanjing University of Posts and TelecommunicationsNanjing 210003China Broadband Wireless Communication and Sensor Network TechnologyKey Laboratory of Ministry of EducationNanjing University of Posts and TelecommunicationsNanjing 210003China Changqing Oilfield Company Digital and Intelligent Business DivisionChina National Petroleum CorporationXi'an 710299China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2024年第33卷第11期

页      面：52-56页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：Project supported by Natural Science Foundation of Jiangsu Province(Grant Nos.BE2022071 and BK20192001) the National Natural Science Foundation of China(Grant Nos.12074194,62101285,62471248,and 12104240) Postgraduate Research&Practice Innovation Program of Jiangsu Province(Grant No.KYCX220954) 

主　　题：asynchronous measurement-device-independent quantum key distribution intensity fluctuations afterpulse dead time 

摘      要：In principle,the asynchronous measurement-device-independent quantum key distribution(AMDI-QKD)can surpass the key rate capacity without phase tracking and phase ***,practical imperfections in sources or detections would dramatically depress its ***,we present an improved model on AMDI-QKD to reduce the influence of these imperfections,including intensity fluctuation,the afterpulse effect,and the dead time of ***,we carry out corresponding numerical *** results show that,by implementing our present work,it can have more than 100 km longer secure transmission distance and one order of magnitude enhancement in the key generation rate after 320 km compared with the standard ***,our model can still break the Pirandola–Laurenza–Ottaviani–Banchi(PLOB)bound even under realistic experimental conditions.