Chiral cavity quantum electrodynamics in a 3D microwave lattice coupled to a transmon qubit (Part 1)

ORAL

Abstract

Recent advancements in the ability to create and manipulate superconducting quantum systems have created an exciting opportunity to construct from the ground up quantum materials tailored to host rich interactions. We have designed a two-dimensional meta-material in which microwave photons inhabiting a lattice of superconducting 3D microwave cavities interact strongly with ferrimagnets, realizing a quarter-flux Hofstadter model for light. This is the first photonic topological lattice platform compatible with strong interactions. We perform state tomography on the lattice and demonstrate chiral, time-reversal symmetry broken edge transport with lifetimes ~1000 times larger than the site to site tunneling rate. We have coupled a transmon qubit to this lattice, achieving, for the first time, a platform for chiral cavity quantum electrodynamics. Here we discuss the design and testing of this system and describe prospects for its application.

**This work was supported by the Chicago MRSEC, which is funded by NSF through grant DMR-1420709; and by ARO Grant No. W911NF-15-1-0397. It was also based on work supported by the National Science Foundation Graduate Research Fellowship under Grant Nos. DGE-1144082 and DGE-1746045.

–

Presenters

  • Margaret Panetta

    • University of Chicago

Authors

  • Margaret Panetta

    • University of Chicago

  • Clai Owens

    • California Institute of Technology

  • Srivatsan Chakram

    • Department of Physics and Astronomy, Rutgers University
    • Physics and Astronomy, Rutgers University
    • Rutgers University
    • University of Chicago

  • Brendan Saxberg

    • University of Chicago

  • Gabrielle Roberts

    • University of Chicago

  • Ruichao Ma

    • Purdue University
    • Department of Physics and Astronomy, Purdue University

  • Andrei Vrajitoarea

    • Princeton University
    • University of Chicago

  • Jon Simon

    • University of Chicago

  • David I Schuster

    • University of Chicago
    • The James Franck Institute and Department of Physics, University of Chicago
    • The James Franck Institute and Department of Physics, The University of Chicago