Coupler characterization of transmons for cross-resonance

ORAL

Abstract

We characterize two-qubit cross-resonance gates and unintended residual coupling on various coupled qubit arrangements. Direct coupling versus coupling via a quantum bus are studied on the basis of cross-resonance gate rate and fall-off of non-nearest neighbor coupling. We experimentally extract coupling rates using Hamiltonian tomography methods, and compare with microwave simulations.

*We acknowledge support from IARPA under Contract No. W911NF-16-0114.

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Presenters

  • Hanhee Paik

    • IBM Thomas J. Watson Research Center

Authors

  • Hanhee Paik

    • IBM Thomas J. Watson Research Center

  • José Chavez-Garcia

    • IBM Thomas J. Watson Research Center

  • Martin Sandberg

    • IBM Thomas J. Watson Research Center

  • Oblesh Jinka

    • IBM Thomas J. Watson Research Center

  • Jeng-Bang Yau

    • IBM Thomas J. Watson Research Center

  • Dongbing Shao

    • IBM Thomas J. Watson Research Center

  • Firat Solgun

    • IBM Thomas J. Watson Research Center

  • Markus Brink

    • IBM Thomas J. Watson Research Center

  • Jerry M. Chow

    • IBM Thomas J. Watson Research Center
    • IBM T J Watson Res Ctr
    • IBM T.J. Watson Research Center
    • IBM T. J. Watson Research Center