Two-qubit spectroscopy of spatiotemporally correlated noise in superconducting qubits. Part 1: theory

ORAL

Abstract

Characterization of realistic noise environments is crucial to the design of optimally tailored control methods for error suppression, and to the validation of microscopic models of noise. In particular, spatial correlations between noise afflicting distinct qubits are important in the determination of thresholds for fault-tolerant quantum computation. Recently, spin-locking relaxometry has been implemented to measure the single-qubit spectrum of quantum noise in superconducting circuits. In this talk, we present a generalization of this technique to two-qubit systems, enabling to simultaneously reconstruct the single-qubit and cross-correlation spectra of quantum dephasing noise. We also present simulations showing how this technique can be experimentally benchmarked using two superconducting qubits exposed to engineered photon shot noise from a common microwave cavity mode.

*This research was funded by the FRQNT, by ARO grant No. W911NF-14-1-0682; and by the Department of Defense via MIT Lincoln Laboratory under Air Force Contract No. FA8721-05-C-0002. The views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the U.S. Government.

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Presenters

  • Felix Beaudoin

    • Department of Physics and Astronomy, Dartmouth College
    • Dartmouth College

Authors

  • Felix Beaudoin

    • Department of Physics and Astronomy, Dartmouth College
    • Dartmouth College

  • Leigh Norris

    • Department of Physics and Astronomy, Dartmouth College
    • Dartmouth College

  • Uwe von Lüpke

    • Research Laboratory of Electronics, Massachusetts Institute of Technology

  • Youngkyu Sung

    • Research Laboratory of Electronics, Massachusetts Institute of Technology
    • Massachusetts Institute of Technology

  • Morten Kjærgaard

    • Research Laboratory of Electronics, Massachusetts Institute of Technology
    • Massachusetts Institute of Technology
    • Niels Bohr Institute
    • Research Laboratory of Electronics, Massachusetts Institute of Technology, USA

  • Daniel Campbell

    • Research Laboratory of Electronics, Massachusetts Institute of Technology
    • Research Laboratory of Electronics, Massachusetts Institute of Technology, USA
    • Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139
    • Massachusetts Institute of Technology

  • David K Kim

    • MIT Lincoln Lab
    • Lincoln Laboratory, Massachusetts Institute of Technology
    • MIT Lincoln Laboratory
    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology Lincoln Laboratory
    • Lincoln Lab, Massachusetts Institute of Technology, USA
    • MIT Lincoln Laboratory, Massachusetts Institute of Technology

  • Jonilyn L Yoder

    • MIT Lincoln Lab
    • Lincoln Laboratory, Massachusetts Institute of Technology
    • MIT Lincoln Laboratory
    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology Lincoln Laboratory
    • Lincoln Lab, Massachusetts Institute of Technology, USA
    • MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA 02421
    • MIT Lincoln Laboratory, Massachusetts Institute of Technology

  • Ioan-Mihai Pop

    • Karlsruhe Institute of Technology
    • Physikalisches Institut, Karlsruhe Institute of Technology
    • Physics, Karlsruhe Institute of Technology
    • Physikalisches Institut, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany

  • Simon Gustavsson

    • Research Laboratory of Electronics, Massachusetts Institute of Technology
    • Massachusetts Institute of Technology
    • Research Laboratory of Electronics, Massachusetts Institute of Technology, USA
    • Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139
    • Research Laboratory of Electronics, MIT

  • William D Oliver

    • Research Laboratory of Electronics, Massachusetts Institute of Technology
    • Department of Physics, Research Laboratory of Electronics, Lincoln Laboratory, Massachusetts Institute of Technology
    • MIT Lincoln Lab
    • MIT Lincoln Laboratory, Department of Physics, Massachusetts Institute of Technology
    • MIT Lincoln Laboratory
    • Massachusetts Institute of Technology
    • Research Laboratory of Electronics, Physics, Lincoln Laboratory, Massachusetts Institute of Technology
    • Department of Physics, Massachusetts Institute of Technology
    • Research Laboratory of Electronics, Massachusetts Institute of Technology, MIT Lincoln Laboratory, Physics, Massachusetts Institute of Technology
    • Dept. of Physics, Research Laboratory of Electronics, and Lincoln Lab, Massachusetts Institute of Technology, USA
    • Research Laboratory of Electronics, Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA
    • Massachusetts Institute of Technology and MIT Lincoln Laboratory
    • Research Laboratory of Electronics, MIT Lincoln Laboratory, Department of Physics, Massachusetts Institute of Technology
    • Department of Physics, Research Laboratory of Electronics, MIT Lincoln Laboratory, Massachusetts Institute of Technology
    • Department of Physics, MIT; Research Laboratory of Electronics, MIT; MIT Lincoln Laboratory

  • Lorenza Viola

    • Department of Physics and Astronomy, Dartmouth College
    • Dartmouth College