Opening a quantum communication channel in a chiral lattice for photons

ORAL

Abstract

Superconducting quantum bits and microwave cavity resonators provide a platform for constructing synthetic quantum materials which leverages the strong coupling between superconducting qubits and cavities and offers the option to introduce topology through physical modifications to an engineered system. We have previously [1] realized a quarter-flux Hoftsadter lattice for microwave photons from a 2D array of superconducting cavities and have coupled this topological photonic metamaterial to a single superconducting transmon qubit, exploring cavity quantum electrodynamics in this chiral system [2]. Here we couple two nonlinearities to this photonic lattice and share progress towards demonstrating qubit-qubit communication via a chiral lattice edge channel. Addition of more nonlinearities supplies access to photon-photon interactions and develops an avenue towards combining topology and many-body physics in a synthetic material.

[1] Owens et al., Phys. Rev. A. 97, 013818, 2018.

[2] Owens et al., Nat. Phys. 18, 1048-1052, 2022.

*This work was supported primarily by ARO MURI W911NF-15-1-0397 and AFOSR MURI FA9550-19-1-0399. This work was also supported by NSF EAGER 1926604, and the University of Chicago Materials Research Science and Engineering Center, which is funded by National Science Foundation under award no. DMR-1420709. M.G.P, C.O., and G.R. acknowledge support from the NSF GRFP.

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Presenters

  • Margaret G Panetta

    • University of Chicago

Authors

  • Margaret G Panetta

    • University of Chicago

  • Andrei Vrajitoarea

    • University of Chicago

  • Gabrielle Roberts

    • University of Chicago

  • Brendan Saxberg

    • University of Chicago

  • Clai Owens

    • Caltech

  • Srivatsan Chakram

    • Rutgers University

  • Ruichao Ma

    • Purdue University

  • David Schuster

    • University of Chicago

  • Jonathan Simon

    • Stanford University
    • Stanford