Evolutionary algorithm to design high-cooperativity optical cavities

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.

Text

Evolution_algorithm_for_cavities_mirrors_design_final - Accepted Manuscript

Available under License Creative Commons Attribution.

Download (865kB)

Text

Karpov_2022_New_J._Phys._24_073028 - Version of Record

Available under License Creative Commons Attribution.

Download (2MB)

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

Learn more about Zepler Institute for Photonics and Nanoelectronics research