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

页码：13195 / 13200

页数：6

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