Influence of atmospheric turbulence on optical communications using orbital angular momentum for encoding

被引：283
|
作者：
Malik, Mehul [1 ]
O'Sullivan, Malcolm [1 ]
Rodenburg, Brandon [1 ]
Mirhosseini, Mohammad [1 ]
Leach, Jonathan [2 ]
Lavery, Martin P. J. [3 ]
Padgett, Miles J. [3 ]
Boyd, Robert W. [1 ,2 ]
机构：
[1] Univ Rochester, Inst Opt, Rochester, NY 14627 USA
[2] Univ Ottawa, Dept Phys, Ottawa, ON K1N 6N5, Canada
[3] Univ Glasgow, Sch Phys & Astron, Glasgow, Lanark, Scotland
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 12期
关键词：
QUANTUM KEY DISTRIBUTION; PROPAGATION;
D O I：
10.1364/OE.20.013195
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We describe an experimental implementation of a free-space 11-dimensional communication system using orbital angular momentum (OAM) modes. This system has a maximum measured OAM channel capacity of 2.12 bits/photon. The effects of Kolmogorov thin-phase turbulence on the OAM channel capacity are quantified. We find that increasing the turbulence leads to a degradation of the channel capacity. We are able to mitigate the effects of turbulence by increasing the spacing between detected OAM modes. This study has implications for high-dimensional quantum key distribution (QKD) systems. We describe the sort of QKD system that could be built using our current technology. (C) 2012 Optical Society of America
引用
收藏
页码：13195 / 13200
页数：6
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