High-speed free-space quantum key distribution system for urban daylight applications

被引：29

作者：

Garcia-Martinez, M. J. ^{[1
]}

Denisenko, N. ^{[1
]}

Soto, D. ^{[1
]}

Arroyo, D. ^{[2
]}

Orue, A. B. ^{[1
]}

Fernandez, V. ^{[1
]}

机构：

[1] CSIC, Informat Secur Inst, Madrid 28006, Spain

[2] Univ Autonoma Madrid, Grp Neurocomputac Biol, Dpto Ingn Informat, Escuela Politecn Super, E-28049 Madrid, Spain

来源：

APPLIED OPTICS | 2013年 / 52卷 / 14期

关键词：

CRYPTOGRAPHY; STATES;

D O I：

10.1364/AO.52.003311

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report a free-space quantum key distribution system designed for high-speed key transmission in urban areas. Clocking the system at gigahertz frequencies and efficiently filtering background enables higher secure key rates than those previously achieved by similar systems. The transmitter and receiver are located in two separate buildings 300 m a part in downtown Madrid and they exchange secure keys at rates up to 1 Mbps. The system operates in full bright daylight conditions with an average secure key rate of 0.5 Mbps and 24 h stability without human intervention. (c) 2013 Optical Society of America

引用

页码：3311 / 3317

页数：7

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