Non-Gaussian Noise Spectroscopy With Superconducting Qubits. Part 1: Theory.

ORAL

Abstract

Non-Gaussian noise can play an important role in qubit decoherence, for example in the presence of two-level fluctuators or in environments far from thermal equilibrium. While there has been substantial experimental progress in characterizing Gaussian noise, non-Gaussian noise spectroscopy has yet to be experimentally implemented. This task is essential for designing robust control and error correction for realistic noisy environments. To accomplish this, a non-Gaussian noise characterization method based on dynamical decoupling was introduced in Ref. [1]. Before using these protocols on native noise, it is important to assess them with engineered non-Gaussian noise. In this talk, we theoretically describe how to benchmark this method in realistic superconducting qubit systems like the transmon. We also report on progress toward characterizing native non-Gaussian sources of noise in these systems.
[1] Norris et al. Phys. Rev. Lett. 116, 150503 (2016)

*This research is funded by the U.S. Army Research Office grant no. W911NF-14-1-0682

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Presenters

  • Felix Beaudoin

    • Department of Physics and Astronomy, Dartmouth College

Authors

  • Felix Beaudoin

    • Department of Physics and Astronomy, Dartmouth College

  • Leigh Norris

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

  • Youngkyu Sung

    • Department of Electrical Engineering and Computer Science, Research Laboratory of Electronics, Massachusetts Institute of Technology
    • Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology

  • Fei Yan

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

  • Simon Gustavsson

    • Massachusetts Institute of Technology
    • Research Laborotary of Electronics, Massachusetts Institute of Technology
    • Massachusetts Inst of Tech-MIT
    • Research Laboratory of Electronics, Massachusetts Institute of Technology
    • Research Laboratory of Electronics, Massachusetts Inst of Tech-MIT
    • MIT
    • Research Laboratory of Electronics, Massachusetts institute of Technology

  • William Oliver

    • MIT Lincoln Laboratory
    • MIT Lincoln Lab
    • Massachusetts Institute of Technology & MIT Lincoln Laboratory
    • Department of Physics, Research Laboratory of Electronics, Lincoln Laboratory, Massachusetts Institute of Technology
    • Massachusetts Inst of Tech-MIT
    • Department of Physics, Research Laboratory of Electronics, Lincoln Laboratory, Massachusetts Inst of Tech-MIT
    • MIT
    • Lincoln Laboratory, Research Laboratory of Electronics, and Department of Physics, Massachusetts Institute of Technology
    • Department of Physics, Research Laboratory of Electronics, Lincoln Laboratory, Massachusetts institute of Technology

  • Lorenza Viola

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