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Room temperature III-nitride quantum light sources

Bishop, Samuel 2022. Room temperature III-nitride quantum light sources. PhD Thesis, Cardiff University.
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A system that is able to produce single photons is a fundamental building block for many quantum technologies. Significant progress has been made in the solid state, where semiconductor quantum dots and defect states in wide band gap materials have been heavily investigated as sources of nonclassical states of light. However, only few solid state systems are able to produce single photons at room temperature, removing the requirements for costly cryogenic cooling that limits the practicality of some of today’s highest performance single photon sources. The large bandgaps of binary III-nitride compound semiconductors present an exciting platform for quantum photonics at room temperature. In this thesis, quantum emitters in gallium and aluminium nitride are investigated as a future source of single photons at room temperature. Techniques to enhance the light collection from the source are presented, including a lithography technique to pattern top-down etched structures spatially aligned to emitters in these compound semiconductors of widespread use in present lighting and power electronics technology.

Item Type: Thesis (PhD)
Date Type: Completion
Status: Unpublished
Schools: Engineering
Uncontrolled Keywords: 1). III-Nitride 2). Quantum emitters 3). Single photon source 4). Room temperature 5). Compound semiconductors 6). Photonics
Date of First Compliant Deposit: 27 March 2023
Last Modified: 27 Mar 2023 11:28

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