High-fidelity gates towards a scalable superconducting quantum processor

ORAL

Abstract

We experimentally explore the implementation of high-fidelity gates on multiple superconducting qubits coupled to multiple resonators. Having demonstrated all-microwave single and two qubit gates with fidelities $> 90\%$ on multi-qubit single-resonator systems, we expand the application to qubits across two resonators and investigate qubit coupling in this circuit. The coupled qubit-resonators are building blocks towards two-dimensional lattice networks for the application of surface code quantum error correction algorithms.

Authors

  • Jerry M. Chow

    • IBM TJ Watson Research Center
  • Antonio D. Corcoles

    • IBM TJ Watson Research Center
  • Jay M. Gambetta

    • IBM TJ Watson Research Center
  • Chad Rigetti

    • IBM TJ Watson Research Center
  • Blake R. Johnson

    • BBN Raytheon Technologies
  • John A. Smolin

    • IBM TJ Watson Research Center
  • Seth Merkel

    • IBM TJ Watson Research Center
  • Stefano Poletto

    • IBM TJ Watson Research Center
  • Jim Rozen

    • IBM TJ Watson Research Center
  • Mary Beth Rothwell

    • IBM TJ Watson Research Center
  • George A. Keefe

    • IBM TJ Watson Research Center
  • Mark B. Ketchen

    • IBM TJ Watson Research Center
  • Matthias Steffen

    • IBM TJ Watson Research Center