Control-Z two-qubit gate on 2D Kerr cats

ORAL

Abstract

Bosonic encoding based on Kerr cat qubits is one of the most promising approaches for achieving high-quality, scalable multi-qubit systems that are compatible with quantum error correction for noise-biased qubits. Significant research is focused on realizing Kerr cats using superconducting circuits, and Schrödinger cat states in these works have demonstrated high lifetimes and coherence at large cat sizes. However, a comprehensive investigation into a two-qubit gate on Kerr cats, specifically to determine whether they can operate with fidelity below the fault-tolerant threshold, has not yet been fully conducted. Here, we present a protocol to perform a control-Z gate on our high-coherence planar Kerr-Cat qubit with on-chip Purcell filters.

*Research was sponsored by the Army Research Office and was accomplished under Grant Number W911NF-22-1-0258 and 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

  • Ke Wang

    • University of California, Berkeley

Authors

  • Ke Wang

    • University of California, Berkeley

  • AHMED HAJR

    • University of California, Berkeley

  • Bingcheng Qing

    • University of California, Berkeley

  • Bibek Bhandari

    • Chapman University

  • Irwin Huang

    • University of Rochester

  • Chuan-Hong Liu

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

  • Zahra Pedramrazi

    • Lawrence Berkeley National Laboratory

  • Justin Dressel

    • Chapman University

  • Andrew N Jordan

    • Chapman University

  • David I Santiago

    • Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    • University of California, Berkeley