Secret key rates of free-space optical continuous-variable quantum key distribution

被引：10

作者：

Gyongyosi, Laszlo ^{[1
,2
,3
]}

Imre, Sandor ^{[2
]}

机构：

[1] Univ Southampton, Sch Elect & Comp Sci, Southampton SO17 1BJ, Hants, England

[2] Budapest Univ Technol & Econ, Dept Networked Syst & Serv, Budapest, Hungary

[3] Hungarian Acad Sci, MTA BME Informat Syst Res Grp, Budapest, Hungary

来源：

INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS | 2019年 / 32卷 / 18期

基金：

匈牙利科学研究基金会;

关键词：

cryptography; networking; quantum cryptography; quantum key distribution; security;

D O I：

10.1002/dac.4152

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this letter, we derive the maximal achievable secret key rates for continuous-variable quantum key distribution (CVQKD) over free-space optical (FSO) quantum channels. We provide a channel decomposition for FSO-CVQKD quantum channels and study the SNR (signal-to-noise ratio) characteristics. The analytical derivations focus particularly on the low-SNR scenarios. The results are convenient for wireless quantum key distribution and for the quantum Internet.

引用

页数：10

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