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

Mehul Malik; Malcolm O'Sullivan; Brandon Rodenburg; Mohammad Mirhosseini; Jonathan Leach; Martin P. J. Lavery; Miles J. Padgett; Robert W. Boyd

doi:10.1364/OE.20.013195

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

Mehul Malik, Malcolm O'Sullivan, Brandon Rodenburg, Mohammad Mirhosseini, Jonathan Leach, Martin P. J. Lavery, Miles J. Padgett, Robert W. Boyd

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Abstract

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

Original language	English
Pages (from-to)	13195-13200
Number of pages	6
Journal	Optics Express
Volume	20
Issue number	12
DOIs	https://doi.org/10.1364/OE.20.013195
Publication status	Published - 4 Jun 2012

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title = "Influence of atmospheric turbulence on optical communications using orbital angular momentum for encoding",

abstract = "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",

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AU - Malik, Mehul

AU - O'Sullivan, Malcolm

AU - Rodenburg, Brandon

AU - Mirhosseini, Mohammad

AU - Leach, Jonathan

AU - Lavery, Martin P. J.

AU - Padgett, Miles J.

AU - Boyd, Robert W.

PY - 2012/6/4

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N2 - 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

AB - 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

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JO - Optics Express

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

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