Scalable photonic network architecture based on motional averaging in room temperature gas

Quantum interfaces between photons and atomic ensembles have emerged as powerful tools for quantum technologies. Efficient storage and retrieval of single photons requires long-lived collective atomic states, which is typically achieved with immobilized atoms. Thermal atomic vapours, which present a...

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Main Authors:	Borregaard, J., Zugenmaier, M., Petersen, J. M., Shen, H., Vasilakis, G., Jensen, K., Polzik, E. S., Sørensen, A. S.
Format:	Online
Language:	English
Published:	Nature Publishing Group 2016
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4834638/

id	pubmed-4834638
recordtype	oai_dc
spelling	pubmed-48346382016-05-02 Scalable photonic network architecture based on motional averaging in room temperature gas Borregaard, J. Zugenmaier, M. Petersen, J. M. Shen, H. Vasilakis, G. Jensen, K. Polzik, E. S. Sørensen, A. S. Article Quantum interfaces between photons and atomic ensembles have emerged as powerful tools for quantum technologies. Efficient storage and retrieval of single photons requires long-lived collective atomic states, which is typically achieved with immobilized atoms. Thermal atomic vapours, which present a simple and scalable resource, have only been used for continuous variable processing or for discrete variable processing on short timescales where atomic motion is negligible. Here we develop a theory based on motional averaging to enable room temperature discrete variable quantum memories and coherent single-photon sources. We demonstrate the feasibility of this approach to scalable quantum memories with a proof-of-principle experiment with room temperature atoms contained in microcells with spin-protecting coating, placed inside an optical cavity. The experimental conditions correspond to a few photons per pulse and a long coherence time of the forward scattered photons is demonstrated, which is the essential feature of the motional averaging. Nature Publishing Group 2016-04-14 /pmc/articles/PMC4834638/ /pubmed/27076381 http://dx.doi.org/10.1038/ncomms11356 Text en Copyright © 2016, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Borregaard, J. Zugenmaier, M. Petersen, J. M. Shen, H. Vasilakis, G. Jensen, K. Polzik, E. S. Sørensen, A. S.
spellingShingle	Borregaard, J. Zugenmaier, M. Petersen, J. M. Shen, H. Vasilakis, G. Jensen, K. Polzik, E. S. Sørensen, A. S. Scalable photonic network architecture based on motional averaging in room temperature gas
author_facet	Borregaard, J. Zugenmaier, M. Petersen, J. M. Shen, H. Vasilakis, G. Jensen, K. Polzik, E. S. Sørensen, A. S.
author_sort	Borregaard, J.
title	Scalable photonic network architecture based on motional averaging in room temperature gas
title_short	Scalable photonic network architecture based on motional averaging in room temperature gas
title_full	Scalable photonic network architecture based on motional averaging in room temperature gas
title_fullStr	Scalable photonic network architecture based on motional averaging in room temperature gas
title_full_unstemmed	Scalable photonic network architecture based on motional averaging in room temperature gas
title_sort	scalable photonic network architecture based on motional averaging in room temperature gas
description	Quantum interfaces between photons and atomic ensembles have emerged as powerful tools for quantum technologies. Efficient storage and retrieval of single photons requires long-lived collective atomic states, which is typically achieved with immobilized atoms. Thermal atomic vapours, which present a simple and scalable resource, have only been used for continuous variable processing or for discrete variable processing on short timescales where atomic motion is negligible. Here we develop a theory based on motional averaging to enable room temperature discrete variable quantum memories and coherent single-photon sources. We demonstrate the feasibility of this approach to scalable quantum memories with a proof-of-principle experiment with room temperature atoms contained in microcells with spin-protecting coating, placed inside an optical cavity. The experimental conditions correspond to a few photons per pulse and a long coherence time of the forward scattered photons is demonstrated, which is the essential feature of the motional averaging.
publisher	Nature Publishing Group
publishDate	2016
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4834638/
_version_	1613567373650952192

Scalable photonic network architecture based on motional averaging in room temperature gas

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