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Evolutionary algorithm to design high-cooperativity optical cavities

Evolutionary algorithm to design high-cooperativity optical cavities
Evolutionary algorithm to design high-cooperativity optical cavities

Using an evolutionary algorithm combined with a gradient descent (GD) method we design optical cavities with significantly enhanced strong coupling rates between cavity photons and a single quantum emitter. Our approach allows us to find specially designed non-spherical mirrors which lead to high-finesse cavity eigenmodes with large field enhancement at the center of the cavity. The method is based on adding consecutive perturbations to an initial spherical mirror shape using the GD method for optimization. We present mirror profiles which demonstrate higher cavity cooperativity than any spherical cavity of the same size. Finally, we demonstrate numerically how such a cavity enhances the operation frequency and purity of coupling a Ca+ ion to an optical fiber photon.

cavity quantum electrodynamics, evolutionary algorithm, high finesse cavity design, ion photon coupling, machine learning, optical fiber cavity coupling, optical resonator
1367-2630
Karpov, Denis
87bed409-5074-4b29-a54a-1bcfa5dae435
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Karpov, Denis
87bed409-5074-4b29-a54a-1bcfa5dae435
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03

Karpov, Denis and Horak, Peter (2022) Evolutionary algorithm to design high-cooperativity optical cavities. New Journal of Physics, 24 (7), [073028]. (doi:10.1088/1367-2630/ac7e66).

Record type: Article

Abstract

Using an evolutionary algorithm combined with a gradient descent (GD) method we design optical cavities with significantly enhanced strong coupling rates between cavity photons and a single quantum emitter. Our approach allows us to find specially designed non-spherical mirrors which lead to high-finesse cavity eigenmodes with large field enhancement at the center of the cavity. The method is based on adding consecutive perturbations to an initial spherical mirror shape using the GD method for optimization. We present mirror profiles which demonstrate higher cavity cooperativity than any spherical cavity of the same size. Finally, we demonstrate numerically how such a cavity enhances the operation frequency and purity of coupling a Ca+ ion to an optical fiber photon.

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More information

Submitted date: 16 March 2022
Accepted/In Press date: 5 July 2022
Published date: 20 July 2022
Additional Information: We acknowledge financial support by the UK Quantum Technology Program under the EPSRC Hub in Quantum Computing and Simulation (EP/T001062/1). The calculations were performed using the Iridis 5 supercomputer facilities at the University of Southampton.
Keywords: cavity quantum electrodynamics, evolutionary algorithm, high finesse cavity design, ion photon coupling, machine learning, optical fiber cavity coupling, optical resonator

Identifiers

Local EPrints ID: 468314
URI: http://eprints.soton.ac.uk/id/eprint/468314
ISSN: 1367-2630
PURE UUID: 38c027ea-354d-45b4-a0fc-e8bb428e22ca
ORCID for Peter Horak: ORCID iD orcid.org/0000-0002-8710-8764

Catalogue record

Date deposited: 10 Aug 2022 16:35
Last modified: 17 Mar 2024 02:55

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Contributors

Author: Denis Karpov
Author: Peter Horak ORCID iD

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