量子密钥分配
电信线路
计算机科学
卫星
频道(广播)
电子工程
钥匙(锁)
拓扑(电路)
电信
工程类
物理
电气工程
光子
航空航天工程
光学
计算机安全
作者
Hao Luo,Yijun Wang,Hai Zhong,Zhiyue Zuo,Ying Guo
出处
期刊:Journal of The Optical Society of America B-optical Physics
[Optica Publishing Group]
日期:2023-08-10
卷期号:40 (9): 2480-2480
摘要
Passive state preparation (PSP) continuous variable quantum key distribution (CVQKD) drops out optical amplitude and phase modulators, making this scheme suitable for application in space-confined situations. In this paper, we propose a satellite-mediated PSP-CVQKD scheme. To improve the performance of the scheme further, we introduce a phase-insensitive amplifier (PIA) at the receiver side. Based on the detailed noise model and channel parameter estimation analysis, we perform numerical simulations of the proposed scheme while the finite-size effect is considered. Simulation results show that the satellite-mediated PSP-CVQKD is feasible in both downlink and uplink cases based on typical system parameters. The performance can be improved at a relatively low satellite altitude when the PIA is used. Our analysis demonstrates that the proposed scheme may be a potentially cost-effective solution for future chip-scale CVQKD over satellite-mediated links.
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