Fidelity Optimization of the Cross-resonance Gate on a Multi-qubit Quantum Processor

ORAL

Abstract

In this work, we benchmark the performance of the cross-resonance gate in a multi-qubit setting, and evaluate gate fidelity as a function of circuit and control parameters, such as qubit detuning, effective coupling rate, and control pulse shape. We use numerical techniques to efficiently optimize gate parameter configurations. Lastly, we monitor the error syndromes of calibrated gates to investigate their sensitivity to environmental drift. This work outlines systematic calibration and operation of cross-resonance gates with model-guided optimization for general algorithmic utilization in near-term quantum computers.

*This research was supported by the LPS HiPS program under ARO grant W911NF1810178.

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Presenters

  • Ravi Kaushik Naik

    • University of California, Berkeley
    • Physics, University of California, Berkeley

Authors

  • Ravi Kaushik Naik

    • University of California, Berkeley
    • Physics, University of California, Berkeley

  • Bradley Mitchell

    • University of California, Berkeley
    • Univ of California – Berkeley
    • Univ of California - Berkeley
    • Physics, University of California, Berkeley

  • Akel Hashim

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

  • John Mark Kreikebaum

    • University of California, Berkeley

  • Irfan Siddiqi

    • University of California, Berkeley
    • Univ of California - Berkeley
    • Univ of California – Berkeley
    • Physics, University of California, Berkeley