Exploring Multilevel Spin Models in a Strontium Cavity QED System

POSTER

Abstract

Cavity quantum electrodynamics (cavity QED) has emerged as a promising platform for quantum simulation of many-body physics. Here we utilize the full F=9/2 nuclear spin ground states in 87-Sr atoms as a synthetic dimension and realize correlated along this dimension. By isolating the system to a two-level system, we can also observe the mean-field dynamics of pair-creation induced by the same type of cavity-mediated interactions. We also present a technique for single shot readout of the populations of each nuclear spin state, which is compatible with quantum nondemolition (QND) measurements. On a separate front, we also report the realization of the cooperative resonance fluorescence (CRF) model and observe the predicted continuous dissipation-induced superradiant transition [1,2].

[1] H. J. Carmichael, Journal of Physics B: Atomic and Molecular Physics 13, 3551 (1980)

[2] Eric Yilun Song et al. , A dissipation-induced superradiant transition in a strontium cavity-QED system. Sci. Adv.11, eadu5799(2025). DOI:10.1126/sciadv.adu5799

*This material is based upon work supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Quantum Systems Accelerator. We acknowledge additional funding support from the VBFF, the National Science Foundation under Grant Numbers PFC PHY-2317149 (Physics Frontier Center) and OMA-2016244 (QLCI Q-SEnSE), the Heising-Simons Foundation, and NIST. J.T.Y. was supported by the NWO Talent Programme (project number VI.Veni.222.312), which is (partly) financed by the Dutch Research Council (NWO). D.B. was supported by the Simons collaboration on Ultra-Quantum Matter (UQM) which is funded by grants from the Simons Foundation (Grant No. 651440), and acknowledges the hospitality of the KITP while parts of this work were completed.

Publication: Eric Yilun Song et al. , A dissipation-induced superradiant transition in a strontium cavity-QED system. Sci. Adv.11, eadu5799(2025). DOI:10.1126/sciadv.adu5799

Presenters

  • Eric Y Song

    • JILA

Authors

  • Eric Y Song

    • JILA

  • Seth Hew Peng Chew

    • JILA, University of Colorado, Boulder
    • JILA

  • Joyce Kwan

    • Harvard University

  • Dylan J Young

    • JILA

  • Diego A Fallas Padilla

    • JILA and University of Colorado, Boulder

  • Haoqing Zhang

    • University of Colorado, Boulder

  • Diego E Barberena

    • JILA

  • Anjun Chu

    • University of Chicago

  • Edwin Chaparro

    • JILA, University of Colorado, Boulder.
    • University of Colorado, Boulder

  • Sanaa Agarwal

    • JILA

  • David Wellnitz

    • Forschungszentrum Jülich

  • Jeremy T Young

    • University of Amsterdam

  • Zhijing Niu

    • JILA

  • Vera M Schäfer

    • Max-Planck-Institut für Kernphysik

  • Robert J Lewis-Swan

    • University of Oklahoma

  • Ana Maria Rey

    • University of Colorado, Boulder
    • University of Colorado Boulder
    • JILA, University of Colorado Boulder
    • JILA
    • JILA, University of Colorado, Boulder

  • James K Thompson

    • JILA, NIST & University of Colorado
    • JILA & University of Colorado
    • JILA
    • STFC UKRI
    • JILA, NIST, University of Colorado Boulder