• Open Access

Robust gates with spin-locked superconducting qubits

Ido Zuk, Daniel Cohen, Alexey V. Gorshkov, and Alex Retzker
Phys. Rev. Research 6, 013217 – Published 28 February 2024
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Abstract
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Article Text
  • INTRODUCTION
  • SPIN LOCKING OF A TRANSMON
  • COHERENCE TIME OF THE DRIVEN QUBIT
  • FULL MODEL: COSINE POTENTIAL
  • ONE-QUBIT GATE
  • TWO-QUBIT GATE
  • PHASE NOISE AND DATA VERSUS ANCILLA…
  • STATE PREPARATION AND MEASUREMENT IN THE…
  • LEAKAGE DETECTION AND CONVERSION TO…
  • DISCUSSION
  • ACKNOWLEDGMENTS
  • APPENDICES
    • References

    Abstract

    Dynamical decoupling is effective in reducing gate errors in most quantum computation platforms and is therefore projected to play an essential role in future fault-tolerant constructions. In superconducting circuits, however, it has proven difficult to utilize the benefits of dynamical decoupling. In this work, we present a theoretical proposal that incorporates a continuous version of dynamical decoupling, namely, spin locking, with a coupler-based CZ gate for transmons and provide analytical and numerical results that demonstrate its effectiveness.

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    • Received 18 June 2023
    • Revised 4 November 2023
    • Accepted 8 January 2024

    DOI:https://doi.org/10.1103/PhysRevResearch.6.013217

    Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

    Published by the American Physical Society

    Physics Subject Headings (PhySH)

    1. Research Areas
    Open quantum systems & decoherenceQuantum coherence & coherence measuresQuantum controlQuantum engineeringQuantum error correctionQuantum gatesQuantum information with solid state qubitsQuantum nondemolition measurementSurface code quantum computing
    1. Physical Systems
    Superconducting qubits
    Quantum Information, Science & TechnologyCondensed Matter, Materials & Applied Physics

    Authors & Affiliations

    Ido Zuk1,2, Daniel Cohen1,2, Alexey V. Gorshkov1, and Alex Retzker1,2

    • 1AWS Center for Quantum Computing, Pasadena, California 91125, USA
    • 2Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem 91904, Givat Ram, Israel

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    Issue

    Vol. 6, Iss. 1 — February - April 2024

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