Collective dynamics of an atomic ensemble coupled to a microring resonator

ORAL

Abstract

Integrating neutral atoms with nanophotonic structures enables engineered atom-light interactions, giving rise to rich quantum optics phenomena and new opportunities for quantum technologies. A key example is collective emission from densely packed atoms coupled to nanophotonic waveguides or resonators, where strong atom-atom interactions mediated by free-space radiation modes and the nanophotonic guided modes coexist and compete. In this work, we investigate how collective emission develops in the presence of a nanophotonic structure, using singly to nearly-fully excited ensemble of up to 70 atoms evanescently coupled to a nanophotonic microring resonator. We present the experimental platform and discuss representative observations such as superradiance and selective collective emission behaviors to free space and the microring, respectively.

*AL, DD, SJVS, XZ, SP, CH acknowledge support from AFOSR (Grant No. FA9550-22-1-0031), ONR (Grant No. N00014-24-1-2184), and Gordan and Betty Moore Foundation (Award No. 13795). FR acknowledges funding from NSF 2410890-PHY.

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Publication: X. Zhou, D. A. Suresh, F. Robicheaux, C.-L. Hung, Phys. Rev. Lett. 135, 113601 (2025).
D. A. Suresh, X. Zhou, C.-L. Hung, F. Robicheaux, Phys. Rev. A 112, 043717 (2025).

Presenters

  • Ahreum Lee

    • Purdue University

Authors

  • Ahreum Lee

    • Purdue University

  • Dipanjan Das

    • Purdue University

  • Shreya JVS

    • Purdue University
    • Purdue University- West Lafayette

  • Xinchao Zhou

    • Niels Bohr Institutet, University of Copenhagen
    • University of Copenhagen

  • Saivirinchi Prabandhakavi

    • Purdue University

  • Francis Joseph Robicheaux

    • Purdue University

  • Chen-Lung Hung

    • Purdue University