Two-qubit gates for fluxonium qubits using a tunable coupler.

ORAL

Abstract

Tunable couplers enable the realization of efficient two-qubit gates with a high on/off coupling ratio and reduced crosstalk in a single design. In this work, we theoretically explore designs for fast, high-fidelity two-qubit gates between superconducting fluxonium qubits using an inductive tunable coupler. We use this coupler to realize gates from the f-Sim family using fast-flux control on the coupler and qubits. Additionally, we examine parametric two-qubit gates on this architecture to further improve gate performance. We also examine the effects of fabrication errors, leakage and decoherence in our design.

*Research was sponsored by the Army Research Office and was accomplished under Grant Number W911NF-23-1-0323. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the official policies, either expressed or implied, of the Army Research Office or the U.S. Government.

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Presenters

  • Abhishek Chakraborty

    • University of Rochester

Authors

  • Abhishek Chakraborty

    • University of Rochester

  • D. Dominic Dominic Briseño-Colunga

    • Chapman University

  • Noah J Stevenson

    • University of California, Berkeley

  • Bibek Bhandari

    • Chapman University

  • Zahra Pedramrazi

    • University of California, Berkeley

  • Noah Kurt Goss

    • University of California, Berkeley

  • Chuan-Hong Liu

    • University of California, Berkeley
    • Univ of California, Berkeley

  • Andrew N Jordan

    • Chapman University

  • Justin Dressel

    • Chapman University

  • David I Santiago

    • Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    • University of California, Berkeley