Quantum Key Distribution Protocol Based on Odd Coherent Sources and Orbital Angular Momentum

被引：3
|
作者：
He Yefeng [1 ,2 ]
Li Dongqi [2 ]
Song Chang [2 ]
Gao Jianguo [3 ]
机构：
[1] Xian Univ Posts & Telecommun, Natl Engn Lab Wireless Network Secur Technol, Xian 710121, Shaanxi, Peoples R China
[2] Xian Univ Posts & Telecommun, Sch Commun & Informat Engn, Xian 710121, Shaanxi, Peoples R China
[3] Shaanxi Ruixiang Petr Technol Serv Co Ltd, Xian 710018, Shaanxi, Peoples R China
来源：
CHINESE JOURNAL OF LASERS-ZHONGGUO JIGUANG | 2018年 / 45卷 / 07期
关键词：
quantum optics; orbital angular momentum; measurement device independent; quantum key distribution; odd coherent source;
D O I：
10.3788/CJL201815.0712001
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In view of the problem of the low key generation rate for the measurement device independent quantum key distribution (MDEQKD) protocol based on weak coherent sources (WCS) and orbital angular momentum (OAM), the MDI-QKD protocol based on odd coherent sources (OCS) and OAM is investigated, and its performance and parameters arc analyzed. The relationships between key generation rate, quality factor of detector and secure transmission distance arc investigated. The performance comparison between the MDI-QKD protocol based on OCS and OAM and the MDI-QKD protocol based on WCS and OAM is compared. The simulation results show that the key generation rate decreases with the increase of secure transmission distance. The adoption of OCS makes up the deficiency of WCS and reduces the photon number greatly, while the adoption of OAM can solve the problem of the dependence defect of the base and increase the maximum secure transmission distance, which provides an important theoretical reference for the practical quantum key distribution protocol.
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页数：6
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