Transform-limited single photons from a single quantum dot

Developing a quantum photonics network requires a source of very-high-fidelity single photons. An outstanding challenge is to produce a transform-limited single-photon emitter to guarantee that single photons emitted far apart in the time domain are truly indistinguishable. This is particularly diff...

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Main Authors:	Kuhlmann, Andreas V., Prechtel, Jonathan H., Houel, Julien, Ludwig, Arne, Reuter, Dirk, Wieck, Andreas D., Warburton, Richard J.
Format:	Online
Language:	English
Published:	Nature Pub. Group 2015
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4569856/

id	pubmed-4569856
recordtype	oai_dc
spelling	pubmed-45698562015-09-28 Transform-limited single photons from a single quantum dot Kuhlmann, Andreas V. Prechtel, Jonathan H. Houel, Julien Ludwig, Arne Reuter, Dirk Wieck, Andreas D. Warburton, Richard J. Article Developing a quantum photonics network requires a source of very-high-fidelity single photons. An outstanding challenge is to produce a transform-limited single-photon emitter to guarantee that single photons emitted far apart in the time domain are truly indistinguishable. This is particularly difficult in the solid-state as the complex environment is the source of noise over a wide bandwidth. A quantum dot is a robust, fast, bright and narrow-linewidth emitter of single photons; layer-by-layer growth and subsequent nano-fabrication allow the electronic and photonic states to be engineered. This represents a set of features not shared by any other emitter but transform-limited linewidths have been elusive. Here, we report transform-limited linewidths measured on second timescales, primarily on the neutral exciton but also on the charged exciton close to saturation. The key feature is control of the nuclear spins, which dominate the exciton dephasing via the Overhauser field. Nature Pub. Group 2015-09-08 /pmc/articles/PMC4569856/ /pubmed/26348157 http://dx.doi.org/10.1038/ncomms9204 Text en Copyright © 2015, 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	Kuhlmann, Andreas V. Prechtel, Jonathan H. Houel, Julien Ludwig, Arne Reuter, Dirk Wieck, Andreas D. Warburton, Richard J.
spellingShingle	Kuhlmann, Andreas V. Prechtel, Jonathan H. Houel, Julien Ludwig, Arne Reuter, Dirk Wieck, Andreas D. Warburton, Richard J. Transform-limited single photons from a single quantum dot
author_facet	Kuhlmann, Andreas V. Prechtel, Jonathan H. Houel, Julien Ludwig, Arne Reuter, Dirk Wieck, Andreas D. Warburton, Richard J.
author_sort	Kuhlmann, Andreas V.
title	Transform-limited single photons from a single quantum dot
title_short	Transform-limited single photons from a single quantum dot
title_full	Transform-limited single photons from a single quantum dot
title_fullStr	Transform-limited single photons from a single quantum dot
title_full_unstemmed	Transform-limited single photons from a single quantum dot
title_sort	transform-limited single photons from a single quantum dot
description	Developing a quantum photonics network requires a source of very-high-fidelity single photons. An outstanding challenge is to produce a transform-limited single-photon emitter to guarantee that single photons emitted far apart in the time domain are truly indistinguishable. This is particularly difficult in the solid-state as the complex environment is the source of noise over a wide bandwidth. A quantum dot is a robust, fast, bright and narrow-linewidth emitter of single photons; layer-by-layer growth and subsequent nano-fabrication allow the electronic and photonic states to be engineered. This represents a set of features not shared by any other emitter but transform-limited linewidths have been elusive. Here, we report transform-limited linewidths measured on second timescales, primarily on the neutral exciton but also on the charged exciton close to saturation. The key feature is control of the nuclear spins, which dominate the exciton dephasing via the Overhauser field.
publisher	Nature Pub. Group
publishDate	2015
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4569856/
_version_	1613475796540719104

Transform-limited single photons from a single quantum dot

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