Cross resonance gate for a capacitively coupled two fluxonium device

ORAL

Abstract

Cross resonance gate is an entangling gate widely used with transmon qubits for its 'all microwave' structure and no tunability requirements. Yet the weak anharmonicity of the transmon qubit puts some limitations on the CR gate such as the long gate duration. Fluxonium qubits on the other hand are promising candidates for better logic gate performances due to their large anharmonicity and longer coherence times: Application of the cross resonance gate on fluxoniums with fixed frequencies at the half flux quantum suggests shorter gate durations and less leakage to higher states. This work outlines an experimental scheme for calibration and realization of cross resonance gates on fluxonium devices. We will report our progress about the tune up procedures and the benchmarking for a cross resonance gate on a capacitively coupled two fluxonium device in a 3D cavity resonator.

*We acknowledge funding from the U.S. Army Research Office (Grant No. W911NF-18-1-0146).

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Presenters

  • Ebru Dogan

    • University of Massachusetts Amherst

Authors

  • Ebru Dogan

    • University of Massachusetts Amherst

  • Dario Rosenstock

    • University of Massachusetts Amherst

  • Quentin Ficheux

    • University of Maryland, College Park
    • University of Maryland
    • Ecole Normale Superieure de Lyon
    • Univ Lyon, ENS de Lyon, Univ Claude Bernard, CNRS, Laboratoire de Physique,F-69342 Lyon,France

  • Haonan Xiong

    • University of Maryland, College Park

  • Aaron Somoroff

    • University of Maryland, College Park
    • University of Maryland

  • Ray Mencia

    • University of Maryland, College Park

  • Konstantin Nesterov

    • University of Wisconsin-Madison
    • University of Wisconsin - Madison
    • University of Wisconsin - Madison, Madison
    • University of Wisconsin, Madison

  • Maxim G Vavilov

    • University of Wisconsin-Madison
    • Department of Physics and Wisconsin Quantum Institute, University of Wisconsin - Madison
    • University of Wisconsin - Madison
    • University of Wisconsin - Madison, Madison
    • Department of Physics, University of Wisconsin-Madison
    • University of Wisconsin, Madison

  • Vladimir Manucharyan

    • University of Maryland, College Park
    • Department of Physics, University of Maryland
    • University of Maryland

  • Chen Wang

    • University of Massachusetts Amherst
    • University of Massachusetts - Amherst
    • Physics, University of Massachusetts Amherst