Back to Search
Start Over
Optical fibre-based single photon source using InAsP quantum dot nanowires and gradient-index lens collection.
- Source :
-
Scientific reports [Sci Rep] 2021 Nov 24; Vol. 11 (1), pp. 22878. Date of Electronic Publication: 2021 Nov 24. - Publication Year :
- 2021
-
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.<br /> (© 2021. The Author(s).)
Details
- Language :
- English
- ISSN :
- 2045-2322
- Volume :
- 11
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Scientific reports
- Publication Type :
- Academic Journal
- Accession number :
- 34819556
- Full Text :
- https://doi.org/10.1038/s41598-021-02287-y