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

Abstract 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 immedia...

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Autores principales:	David B. Northeast, Dan Dalacu, John F. Weber, Jason Phoenix, Jean Lapointe, Geof C. Aers, Philip J. Poole, Robin L. Williams
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/76162e75090147b7a0f0ceef7d5d0f1d
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spelling	oai:doaj.org-article:76162e75090147b7a0f0ceef7d5d0f1d2021-11-28T12:15:34ZOptical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection10.1038/s41598-021-02287-y2045-2322https://doaj.org/article/76162e75090147b7a0f0ceef7d5d0f1d2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-02287-yhttps://doaj.org/toc/2045-2322Abstract 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.David B. NortheastDan DalacuJohn F. WeberJason PhoenixJean LapointeGeof C. AersPhilip J. PooleRobin L. WilliamsNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q David B. Northeast Dan Dalacu John F. Weber Jason Phoenix Jean Lapointe Geof C. Aers Philip J. Poole Robin L. Williams Optical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection
description	Abstract 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.
format	article
author	David B. Northeast Dan Dalacu John F. Weber Jason Phoenix Jean Lapointe Geof C. Aers Philip J. Poole Robin L. Williams
author_facet	David B. Northeast Dan Dalacu John F. Weber Jason Phoenix Jean Lapointe Geof C. Aers Philip J. Poole Robin L. Williams
author_sort	David B. Northeast
title	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_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_sort	optical fibre-based single photon source using inasp quantum dot nanowires and gradient-index lens collection
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/76162e75090147b7a0f0ceef7d5d0f1d
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Optical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection

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