Optical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection

We present a compact, fibre-coupled single photon source using gradient-index (GRIN) lenses and an InAsP semiconductor quantum dot embedded within an InP photonic nanowire waveguide. A GRIN lens assembly is used to collect photons close to the tip of the nanowire, coupling the light immediately into...

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Autores principales: Northeast, David B., Dalacu, Dan, Weber, John F., Phoenix, Jason, Lapointe, Jean, Aers, Geof C., Poole, Philip J., Williams, Robin L.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8613206/
https://www.ncbi.nlm.nih.gov/pubmed/34819556
http://dx.doi.org/10.1038/s41598-021-02287-y
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author Northeast, David B.
Dalacu, Dan
Weber, John F.
Phoenix, Jason
Lapointe, Jean
Aers, Geof C.
Poole, Philip J.
Williams, Robin L.
author_facet Northeast, David B.
Dalacu, Dan
Weber, John F.
Phoenix, Jason
Lapointe, Jean
Aers, Geof C.
Poole, Philip J.
Williams, Robin L.
author_sort Northeast, David B.
collection PubMed
description We present a compact, fibre-coupled single photon source using gradient-index (GRIN) lenses and an InAsP semiconductor quantum dot embedded within an InP photonic nanowire waveguide. A GRIN lens assembly is used to collect photons close to the tip of the nanowire, coupling the light immediately into a single mode optical fibre. The system provides a stable, high brightness source of fibre-coupled single photons. Using pulsed excitation, we demonstrate on-demand operation with a single photon purity of 98.5% when exciting at saturation in a device with a source-fibre collection efficiency of 35% and an overall single photon collection efficiency of 10%. We also demonstrate “plug and play” operation using room temperature photoluminescence from the InP nanowire for room temperature alignment.
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spelling pubmed-86132062021-11-26 Optical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection Northeast, David B. Dalacu, Dan Weber, John F. Phoenix, Jason Lapointe, Jean Aers, Geof C. Poole, Philip J. Williams, Robin L. Sci Rep Article We present a compact, fibre-coupled single photon source using gradient-index (GRIN) lenses and an InAsP semiconductor quantum dot embedded within an InP photonic nanowire waveguide. A GRIN lens assembly is used to collect photons close to the tip of the nanowire, coupling the light immediately into a single mode optical fibre. The system provides a stable, high brightness source of fibre-coupled single photons. Using pulsed excitation, we demonstrate on-demand operation with a single photon purity of 98.5% when exciting at saturation in a device with a source-fibre collection efficiency of 35% and an overall single photon collection efficiency of 10%. We also demonstrate “plug and play” operation using room temperature photoluminescence from the InP nanowire for room temperature alignment. Nature Publishing Group UK 2021-11-24 /pmc/articles/PMC8613206/ /pubmed/34819556 http://dx.doi.org/10.1038/s41598-021-02287-y Text en © Crown 2021 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Northeast, David B.
Dalacu, Dan
Weber, John F.
Phoenix, Jason
Lapointe, Jean
Aers, Geof C.
Poole, Philip J.
Williams, Robin L.
Optical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection
title Optical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection
title_full Optical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection
title_fullStr Optical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection
title_full_unstemmed Optical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection
title_short Optical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection
title_sort optical fibre-based single photon source using inasp quantum dot nanowires and gradient-index lens collection
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8613206/
https://www.ncbi.nlm.nih.gov/pubmed/34819556
http://dx.doi.org/10.1038/s41598-021-02287-y
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