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A Photonic Device

A Photonic Device
A Photonic Device
A single-photon light source 2 comprises a photonic crystal structure the lattice of which extends in at least two dimensions and includes a line defect defining an optical waveguide 13. A quantum dot light emitter 12 is arranged within the photonic crystal to emit single photons. The single-photon light source may be used as part of a quantum key distribution transmitter. An electronically controlled polarization rotating waveplate comprising a birefringent material may be provided within the waveguide (fig 10) and a Bragg mirror output coupler redirects photons to an integrated single-photon avalanche photodiode detector as part of a quantum key distribution receiver. The photonic crystal lattice may comprise epitaxially grown and patterned III-V semiconductor material such as GaAs grown on a group IV semiconductor substrate such as silicon.
GB2561590
Young, Robert J.
333e90a3-3175-44a6-82ab-f543e6e293db
Noori, Yasir
704d0b70-1ea6-4e00-92ce-cc2543087a09

Young, Robert J. and Noori, Yasir (Inventors) (2018) A Photonic Device. GB2561590.

Record type: Patent

Abstract

A single-photon light source 2 comprises a photonic crystal structure the lattice of which extends in at least two dimensions and includes a line defect defining an optical waveguide 13. A quantum dot light emitter 12 is arranged within the photonic crystal to emit single photons. The single-photon light source may be used as part of a quantum key distribution transmitter. An electronically controlled polarization rotating waveplate comprising a birefringent material may be provided within the waveguide (fig 10) and a Bragg mirror output coupler redirects photons to an integrated single-photon avalanche photodiode detector as part of a quantum key distribution receiver. The photonic crystal lattice may comprise epitaxially grown and patterned III-V semiconductor material such as GaAs grown on a group IV semiconductor substrate such as silicon.

Full text not available from this repository.

More information

Submitted date: 19 April 2017
Published date: 24 October 2018
Additional Information: Application Number - GB1706216.7

Identifiers

Local EPrints ID: 425668
URI: https://eprints.soton.ac.uk/id/eprint/425668
PURE UUID: f75df5d7-21bc-4d9d-b7ce-c66d577834da
ORCID for Yasir Noori: ORCID iD orcid.org/0000-0001-5285-8779

Catalogue record

Date deposited: 31 Oct 2018 17:30
Last modified: 14 Mar 2019 01:21

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