Collective emission and selective radiance in atomic clouds and arrays coupled to a microring resonator

Deepak A. Suresh; Xinchao Zhou; Chen-Lung Hung; F. Robicheaux

doi:10.1103/q8rz-8g2h

Collective emission and selective radiance in atomic clouds and arrays coupled to a microring resonator

Deepak A. Suresh ¹, Xinchao Zhou ¹, Chen-Lung Hung ^1,2, and F. Robicheaux ^1,2,*

¹Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA
²Purdue Quantum Science and Engineering Institute, Purdue University, West Lafayette, Indiana 47907, USA

^*Contact author: robichf@purdue.edu

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Phys. Rev. A 112, 043717 – Published 20 October, 2025

DOI: https://doi.org/10.1103/q8rz-8g2h

Abstract

We theoretically investigate the collective dipole-dipole interactions in atoms coupled to a nanophotonic microring resonator. The atoms can interact with each other through light-induced dipole-dipole interactions mediated by free space and through the resonator whispering-gallery modes. The differing characteristics and mismatched wave numbers of these modes give rise to complex dynamics and provide new opportunities for controlling light-matter interactions. We explore these phenomena in the context of an experimentally realized atom cloud and study the potential of the proposed subwavelength atom arrays.

Physical Review A

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Collective emission and selective radiance in atomic clouds and arrays coupled to a microring resonator

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Collective emission and selective radiance in atomic clouds and arrays coupled to a microring resonator

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