Two-qubit spectroscopy of spatiotemporally correlated noise in superconducting qubits. Part 2: experiment

ORAL

Abstract

Fault-tolerant quantum computing relies on quantum error correction techniques. Most of these correction schemes assume the noise causing errors to exhibit only weak, spatially decaying correlations between distinct qubits. To investigate these assumptions experimentally, there is a need to extend established noise spectroscopy techniques from single- to multi-qubits systems. In this work, we present experiments on correlated dephasing of two superconducting qubits due to photon shot noise in a shared microwave cavity. Utilizing both free and driven evolution protocols, we demonstrate a frequency-selective method to probe the two-qubit correlations, and show how quantum noise spectroscopy techniques can reconstruct both single-qubit and two-qubit cross-spectra.

*This research was funded by the 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

  • Uwe Von Luepke

    • Research Laboratory of Electronics, Massachusetts Institute of Technology

Authors

  • Uwe Von Luepke

    • Research Laboratory of Electronics, Massachusetts Institute of Technology

  • Felix Beaudoin

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

  • Leigh Norris

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

  • 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

  • Dan Campbell

    • Research Laboratory of Electronics, 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

  • Lorenza Viola

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

  • 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