Optical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
24 Nov 2021
24 Nov 2021
Historique:
received:
07
09
2021
accepted:
11
11
2021
entrez:
25
11
2021
pubmed:
26
11
2021
medline:
26
11
2021
Statut:
epublish
Résumé
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.
Identifiants
pubmed: 34819556
doi: 10.1038/s41598-021-02287-y
pii: 10.1038/s41598-021-02287-y
pmc: PMC8613206
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
22878Informations de copyright
© 2021. The Author(s).
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