Photonic Chern insulator in superconducting microwave lattices

ORAL

Abstract

We present the latest progress in developing a novel architecture for exploration of topological matter. We construct photonic lattices from tunnel-coupled, time-reversal-broken microwave cavities that are both low loss and compatible with Josephson junction-mediated particle-particle interactions, allowing us access to topological phenomena such as the fractional quantum Hall effect. We employ seamless 3D microwave cavities all machined from a single block of high purity superconductor, along with Yttrium-Iron-Garnet (YIG) spheres magnetically biased below the critical field so our meta-material is scalable and directly compatible with the cQED toolbox. After demonstrating the essential properties of a time-reversal broken topological insulator at room temperature in without interactions, we now push towards making a lattice cryo-compatible in order to both achieve high quality factors in superconducting cavities and introduce qubits.

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Presenters

  • John Owens

    University of Chciago, Physics, University of Chicago

Authors

  • John Owens

    University of Chciago, Physics, University of Chicago

  • Aman LaChapelle

    Physics, University of Chicago

  • Brendan Saxberg

    University of Chciago, Physics, University of Chicago

  • Ruichao Ma

    University of Chciago, Physics, University of Chicago, James Franck Institute and Department of Physics, University of Chicago

  • Jonathan Simon

    Physics, Univ of Chicago, University of Chciago, Physics, University of Chicago

  • David Schuster

    Univ of Chicago, Physics, Univ of Chicago, James Franck Institute and Department of Physics, University of Chicago, University of Chciago, Physics, University of Chicago, Institute for Molecular Engineering, University of Chicago, University of Chicago, James Franck Institute, University of Chicago