High-fidelity Parametric Entangling Gates for Superconducting Quantum Processors

ORAL

Abstract



Parametrically-activated gates driven by a flux-tunable coupler are a promising approach to engineering fast, high-fidelity entanglement between fixed-frequency transmons. By selecting the proper resonance condition, we can generate both XY-like and ZZ-like interactions, improving the expressiveness of hardware native gatesets in superconducting quantum processors. In this work, we realize and benchmark high-fidelity iSWAP and CZ gates between qubits. We then demonstrate how these techniques can be extended to 3-level qutrit systems to engineer a two-qutrit parametric CZ gate.

*This material was funded by the U.S. Department of Energy, Office of Science, Office of Advanced Scientific Computing Research Quantum Testbed Program under contract DE-AC02-05CH11231.

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Presenters

  • Larry Chen

    • University of California, Berkeley

Authors

  • Larry Chen

    • University of California, Berkeley

  • Kan-Heng Lee

    • Lawrence Berkeley National Laboratory

  • Noah Goss

    • University of California Berkeley
    • University of California, Berkeley

  • Ziqi (Candice) Kang

    • University of California, Berkeley

  • Ravi K Naik

    • Lawrence Berkeley National Laboratory

  • David I Santiago

    • Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    • University of California, Berkeley