Progress on a tunable coupler architecture for parametric gates between far-detuned fixed-frequency transmon qubits: Part 2

ORAL

Abstract

Two-qubit gate performance is a major challenge in high fidelity operation of superconducting quantum processors. Designing an architecture to optimize two-qubit gates is a delicate balance between achieving fast gate speeds while minimizing coupling to the environment and unwanted interactions. Parametric gates are a promising method for entanglement, allowing large on-off ratios between detuned qubits. In this work we discuss progress on an architecture that uses a generalized flux qubit to couple two far-detuned fixed-frequency transmon qubits. AC flux modulation of the coupler allows for fast parametric gates while a DC flux bias allows the device to be tuned to a regime with zero static-ZZ crosstalk between the data qubits. Part 2: Performance benchmarking.

*This work was supported by Army Research Office Grant No. W911NF1910016 and by EPiQC, an NSF Expedition in Computing, under grant CCF-1730449.

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Presenters

  • Charles Guinn

    • Princeton University

Authors

  • Charles Guinn

    • Princeton University

  • Sara F Sussman

    • Princeton

  • Pranav S Mundada

    • Q-CTRL
    • Princeton University

  • Andrei Vrajitoarea

    • University of Chicago

  • Catherine Leroux

    • Université de Sherbrooke

  • Alexander P Place

    • Princeton University

  • Camille Le Calonnec

    • Universite de Sherbrooke

  • Agustin Di Paolo

    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology (MIT)

  • Alexandru Petrescu

    • Ecole des Mines de Paris

  • Alexandre Blais

    • Universite de Sherbrooke
    • Université de Sherbrooke

  • Andrew A Houck

    • Princeton University