Geometric Gates via Parametric Control of a SQUID Coupler

ORAL

Abstract

Quantum gates involving topologically protected geometric phases and implemented via adiabatic evolution are more likely to be robust against pulse imperfections and parameter uncertainties. Recent techniques for implementing accelerated two-qubit adiabatic gates have used multiple control drives and a common auxiliary mode to imprint the geometric phase for a CZ gate. We propose a similar geometric CZ gate between two fluxonia implemented via parametric flux control of a tunable SQUID coupler. The SQUID coupler has the advantage of minimizing residual static ZZ interactions when idling at its off point while still enabling rapid parametric control.

* 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

  • Daniel D Briseno-Colunga

    Chapman University

Authors

  • Daniel D Briseno-Colunga

    Chapman University

  • Noah J Stevenson

    University of California, Berkeley

  • Zahra Pedramrazi

    Lawrence Berkeley National Laboratory

  • Noah Goss

    University of California Berkeley, University of California, Berkeley

  • Abhishek Chakraborty

    University of Rochester

  • Bibek Bhandari

    Institute for Quantum Studies, Chapman University, Chapman University

  • Chuan-Hong Liu

    University of California, Berkeley, University of Wisconsin - Madison, University of California Berkeley

  • Andrew N Jordan

    University of Rochester, Chapman University

  • Justin G Dressel

    Chapman Univ, Chapman University

  • David I Santiago

    Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    University of California, Berkeley