Relay-Assisted Quantum-Key Distribution Over Long Atmospheric Channels

被引：8
|
作者：
Safari, Majid [1 ]
Uysal, Murat [1 ]
机构：
[1] Univ Waterloo, Dept Elect & Comp Engn, Waterloo, ON N2L 3G1, Canada
来源：
JOURNAL OF LIGHTWAVE TECHNOLOGY | 2009年 / 27卷 / 20期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Free-space optics; quantum-key distribution; relay-assisted systems; ADAPTIVE OPTICS; COMMUNICATION; PHOTONS;
D O I：
10.1109/JLT.2009.2024554
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 paper, we investigate a terrestrial relay-assisted scheme for a free-space quantum key distribution (QKD) system based on BB84 protocol. We consider the deployment of passive relays which simply redirect the qubits to the next relay node or to the receiver without performing any measurement or detection process. Based on a near-field analysis, we derive an upper bound on quantum bit error rate (QBER) of the relay-assisted QKD system. Our results demonstrate that the relay-assisted scheme is able to outperform point-to-point direct transmission for long link ranges in which turbulence effects are particularly degrading.
引用
收藏
页码：4508 / 4515
页数：8
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