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
24 October 2018
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.
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.
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Submitted date: 19 April 2017
Published date: 24 October 2018
Additional Information:
Application Number - GB1706216.7
Identifiers
Local EPrints ID: 425668
URI: http://eprints.soton.ac.uk/id/eprint/425668
PURE UUID: f75df5d7-21bc-4d9d-b7ce-c66d577834da
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Date deposited: 31 Oct 2018 17:30
Last modified: 23 Feb 2023 03:16
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Contributors
Inventor:
Robert J. Young
Inventor:
Yasir Noori
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