量子电子学报2017，Vol.34Issue(4)：446-450,5.DOI:10.3969/j.issn.1007-5461.2017.04.011
基于修正相干态光源的MDI-QKD全局估计性能分析
Performance analysis of MDI-QKD global estimation based on modified coherent source
摘要
Abstract
In order to improve the overall performance of measurement-device-independent quantum key distribution (MDI-QKD),the properties of photon number distribution can be optimized by using the modified coherent source (MCS),and a MDI-QKD system is designed based on MCS.The relationship between key generation rate and transmission distance is derived based on calculation method of global estimation.The full use of single photon information during privacy amplification calculation stage is ensured,and the more accurate lower limit value of key rate is obtained.The performances of proposed system and MDI-QKD system based on heralded single photon source (HSPS) are compared by simulation analysis.Results show that the transmission distance of MCS light source is increased by 9％ than that of HSPS light source,and the system performance is improved effectively.关键词
量子光学/测量设备无关/全局估计/修正相干态光源Key words
quantum optics/measurement device independent/global estimation/modified coherent source分类
信息技术与安全科学引用本文复制引用
薛阳,马丽华,石磊,魏家华,罗均文..基于修正相干态光源的MDI-QKD全局估计性能分析[J].量子电子学报,2017,34(4):446-450,5.基金项目
Supported by National Natural Science Foundation of China(国家自然科学基金,61168068) （国家自然科学基金,61168068）
