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Single-End Adaptive Optics Compensation for Emulated Turbulence in a Bi-Directional 10-Mbit/s per Channel Free-Space Quantum Communication Link Using Orbital-Angular-Momentum Encoding

A single-end adaptive-optics (AO) module is experimentally demonstrated to mitigate the emulated atmospheric turbulence effects in a bi-directional quantum communication link, which employs orbital angular momentum (OAM) for data encoding. A classical Gaussian beam is used as a probe to detect the t...

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Autores principales: Liu, Cong, Pang, Kai, Zhao, Zhe, Liao, Peicheng, Zhang, Runzhou, Song, Haoqian, Cao, Yinwen, Du, Jing, Li, Long, Song, Hao, Ren, Yongxiong, Xie, Guodong, Zhao, Yifan, Zhao, Jiapeng, Rafsanjani, Seyed M. H., Willner, Ari N., Shapiro, Jeffrey H., Boyd, Robert W., Tur, Moshe, Willner, Alan E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: AAAS 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6750101/
https://www.ncbi.nlm.nih.gov/pubmed/31549088
http://dx.doi.org/10.34133/2019/8326701
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author Liu, Cong
Pang, Kai
Zhao, Zhe
Liao, Peicheng
Zhang, Runzhou
Song, Haoqian
Cao, Yinwen
Du, Jing
Li, Long
Song, Hao
Ren, Yongxiong
Xie, Guodong
Zhao, Yifan
Zhao, Jiapeng
Rafsanjani, Seyed M. H.
Willner, Ari N.
Shapiro, Jeffrey H.
Boyd, Robert W.
Tur, Moshe
Willner, Alan E.
author_facet Liu, Cong
Pang, Kai
Zhao, Zhe
Liao, Peicheng
Zhang, Runzhou
Song, Haoqian
Cao, Yinwen
Du, Jing
Li, Long
Song, Hao
Ren, Yongxiong
Xie, Guodong
Zhao, Yifan
Zhao, Jiapeng
Rafsanjani, Seyed M. H.
Willner, Ari N.
Shapiro, Jeffrey H.
Boyd, Robert W.
Tur, Moshe
Willner, Alan E.
author_sort Liu, Cong
collection PubMed
description A single-end adaptive-optics (AO) module is experimentally demonstrated to mitigate the emulated atmospheric turbulence effects in a bi-directional quantum communication link, which employs orbital angular momentum (OAM) for data encoding. A classical Gaussian beam is used as a probe to detect the turbulence-induced wavefront distortion in the forward direction of the link. Based on the detected wavefront distortion, an AO system located on one end of the link is used to simultaneously compensate for the forward and backward channels. Specifically, with emulated turbulence and when the probe is turned on, the mode purity of photons carrying OAM ℓ = 1 is improved by ~ 21 % with AO mitigation. We also measured the performance when encoding data using OAM {ℓ = −1, + 2} and {ℓ = −2, + 1} in the forward and backward channels, respectively, at 10 Mbit/s per channel with one photon per pulse on average. For this case, we found that the AO system could reduce the turbulence effects increased quantum-symbol-error-rate (QSER) by ~ 76 % and ~ 74 %, for both channels in the uni-directional and bi-directional cases, respectively. Similar QSER improvement is observed for the opposite direction channels in the bi-directional case.
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spelling pubmed-67501012019-09-23 Single-End Adaptive Optics Compensation for Emulated Turbulence in a Bi-Directional 10-Mbit/s per Channel Free-Space Quantum Communication Link Using Orbital-Angular-Momentum Encoding Liu, Cong Pang, Kai Zhao, Zhe Liao, Peicheng Zhang, Runzhou Song, Haoqian Cao, Yinwen Du, Jing Li, Long Song, Hao Ren, Yongxiong Xie, Guodong Zhao, Yifan Zhao, Jiapeng Rafsanjani, Seyed M. H. Willner, Ari N. Shapiro, Jeffrey H. Boyd, Robert W. Tur, Moshe Willner, Alan E. Research (Wash D C) Research Article A single-end adaptive-optics (AO) module is experimentally demonstrated to mitigate the emulated atmospheric turbulence effects in a bi-directional quantum communication link, which employs orbital angular momentum (OAM) for data encoding. A classical Gaussian beam is used as a probe to detect the turbulence-induced wavefront distortion in the forward direction of the link. Based on the detected wavefront distortion, an AO system located on one end of the link is used to simultaneously compensate for the forward and backward channels. Specifically, with emulated turbulence and when the probe is turned on, the mode purity of photons carrying OAM ℓ = 1 is improved by ~ 21 % with AO mitigation. We also measured the performance when encoding data using OAM {ℓ = −1, + 2} and {ℓ = −2, + 1} in the forward and backward channels, respectively, at 10 Mbit/s per channel with one photon per pulse on average. For this case, we found that the AO system could reduce the turbulence effects increased quantum-symbol-error-rate (QSER) by ~ 76 % and ~ 74 %, for both channels in the uni-directional and bi-directional cases, respectively. Similar QSER improvement is observed for the opposite direction channels in the bi-directional case. AAAS 2019-02-24 /pmc/articles/PMC6750101/ /pubmed/31549088 http://dx.doi.org/10.34133/2019/8326701 Text en Copyright © 2019 Cong Liu et al. https://creativecommons.org/licenses/by/4.0/ Exclusive licensee Science and Technology Review Publishing House. Distributed under a Creative Commons Attribution License (CC BY 4.0).
spellingShingle Research Article
Liu, Cong
Pang, Kai
Zhao, Zhe
Liao, Peicheng
Zhang, Runzhou
Song, Haoqian
Cao, Yinwen
Du, Jing
Li, Long
Song, Hao
Ren, Yongxiong
Xie, Guodong
Zhao, Yifan
Zhao, Jiapeng
Rafsanjani, Seyed M. H.
Willner, Ari N.
Shapiro, Jeffrey H.
Boyd, Robert W.
Tur, Moshe
Willner, Alan E.
Single-End Adaptive Optics Compensation for Emulated Turbulence in a Bi-Directional 10-Mbit/s per Channel Free-Space Quantum Communication Link Using Orbital-Angular-Momentum Encoding
title Single-End Adaptive Optics Compensation for Emulated Turbulence in a Bi-Directional 10-Mbit/s per Channel Free-Space Quantum Communication Link Using Orbital-Angular-Momentum Encoding
title_full Single-End Adaptive Optics Compensation for Emulated Turbulence in a Bi-Directional 10-Mbit/s per Channel Free-Space Quantum Communication Link Using Orbital-Angular-Momentum Encoding
title_fullStr Single-End Adaptive Optics Compensation for Emulated Turbulence in a Bi-Directional 10-Mbit/s per Channel Free-Space Quantum Communication Link Using Orbital-Angular-Momentum Encoding
title_full_unstemmed Single-End Adaptive Optics Compensation for Emulated Turbulence in a Bi-Directional 10-Mbit/s per Channel Free-Space Quantum Communication Link Using Orbital-Angular-Momentum Encoding
title_short Single-End Adaptive Optics Compensation for Emulated Turbulence in a Bi-Directional 10-Mbit/s per Channel Free-Space Quantum Communication Link Using Orbital-Angular-Momentum Encoding
title_sort single-end adaptive optics compensation for emulated turbulence in a bi-directional 10-mbit/s per channel free-space quantum communication link using orbital-angular-momentum encoding
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6750101/
https://www.ncbi.nlm.nih.gov/pubmed/31549088
http://dx.doi.org/10.34133/2019/8326701
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