Obtaining better performance in the measurement-device-independent quantum key distribution with heralded single-photon sources

作     者：Xing-Yu Zhou Chun-Hui Zhang Chun-Mei Zhang Qin Wang 

作者机构：Institute of Signal Processing and Transmission Nanjing University of Posts and Telecommunications Nanjing 210003 China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Nanjing 210003 China Key Laboratory of Quantum Information University of Science and Technology of China Hefei 230026 China 

出 版 物：《Physical Review A》 (Phys. Rev. A)

年 卷 期：2017年第96卷第5期

页      面：052337-052337页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 070203[理学-原子与分子物理] 070202[理学-粒子物理与原子核物理] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：NUPTSF, (NY217006) Natural Science Foundation of the Jiangsu Higher Education Institutions, (15KJA120002, 17KJB140016) Outstanding Youth Project of Jiangsu Province, (BK20150039) Postgraduate Research and Practice Innovation Program of Jiangsu Province National Natural Science Foundation of China, NSFC, (11774180, 61475197, 61590932, 61705110) Natural Science Foundation of Jiangsu Province, (BK20170902) National Key Research and Development Program of China, NKRDPC, (2017YFA0304100) 

主　　题：Quantum cryptography 

摘      要：Measurement-device-independent quantum key distribution (MDI-QKD) has been widely investigated due to its remarkable advantages on the achievable transmission distance and practical security. However, the relative low key generation rate limits its real-life implementations. In this work, we adopt the newly proposed four-intensity decoy-state scheme [Phys. Rev. A 93, 042324 (2016)] to study the performance of MDI-QKD with heralded single-photon sources (HSPS). Corresponding simulation results demonstrate that the four-intensity decoy-state scheme combining HSPS can drastically improve both the key generation rate and transmission distance in MDI-QKD, which may be very promising in future MDI-QKD systems.