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Reducing the impact of radioactivity on quantum circuits in a deep-underground facility

Author

Listed:
  • L. Cardani

    (INFN Sezione di Roma)

  • F. Valenti

    (PHI, Karlsruhe Institute of Technology
    IPE, Karlsruhe Institute of Technology)

  • N. Casali

    (INFN Sezione di Roma)

  • G. Catelani

    (JARA Institute for Quantum Information, Forschungszentrum Jülich)

  • T. Charpentier

    (PHI, Karlsruhe Institute of Technology)

  • M. Clemenza

    (Università di Milano - Bicocca
    INFN Sezione di Milano - Bicocca)

  • I. Colantoni

    (INFN Sezione di Roma
    Sapienza Università di Roma)

  • A. Cruciani

    (INFN Sezione di Roma)

  • G. D’Imperio

    (INFN Sezione di Roma)

  • L. Gironi

    (Università di Milano - Bicocca
    INFN Sezione di Milano - Bicocca)

  • L. Grünhaupt

    (PHI, Karlsruhe Institute of Technology)

  • D. Gusenkova

    (PHI, Karlsruhe Institute of Technology)

  • F. Henriques

    (PHI, Karlsruhe Institute of Technology)

  • M. Lagoin

    (PHI, Karlsruhe Institute of Technology)

  • M. Martinez

    (Universidad de Zaragoza)

  • G. Pettinari

    (Institute for Photonics and Nanotechnologies, National Research Council)

  • C. Rusconi

    (INFN Laboratori Nazionali del Gran Sasso
    University of South Carolina)

  • O. Sander

    (IPE, Karlsruhe Institute of Technology)

  • C. Tomei

    (INFN Sezione di Roma)

  • A. V. Ustinov

    (PHI, Karlsruhe Institute of Technology
    National University of Science and Technology MISIS
    Russian Quantum Center)

  • M. Weber

    (IPE, Karlsruhe Institute of Technology)

  • W. Wernsdorfer

    (PHI, Karlsruhe Institute of Technology
    IQMT, Karlsruhe Institute of Technology
    Institut Néel, CNRS and Université Joseph Fourier)

  • M. Vignati

    (INFN Sezione di Roma
    Sapienza Università di Roma)

  • S. Pirro

    (INFN Laboratori Nazionali del Gran Sasso)

  • I. M. Pop

    (PHI, Karlsruhe Institute of Technology
    IQMT, Karlsruhe Institute of Technology)

Abstract

As quantum coherence times of superconducting circuits have increased from nanoseconds to hundreds of microseconds, they are currently one of the leading platforms for quantum information processing. However, coherence needs to further improve by orders of magnitude to reduce the prohibitive hardware overhead of current error correction schemes. Reaching this goal hinges on reducing the density of broken Cooper pairs, so-called quasiparticles. Here, we show that environmental radioactivity is a significant source of nonequilibrium quasiparticles. Moreover, ionizing radiation introduces time-correlated quasiparticle bursts in resonators on the same chip, further complicating quantum error correction. Operating in a deep-underground lead-shielded cryostat decreases the quasiparticle burst rate by a factor thirty and reduces dissipation up to a factor four, showcasing the importance of radiation abatement in future solid-state quantum hardware.

Suggested Citation

  • L. Cardani & F. Valenti & N. Casali & G. Catelani & T. Charpentier & M. Clemenza & I. Colantoni & A. Cruciani & G. D’Imperio & L. Gironi & L. Grünhaupt & D. Gusenkova & F. Henriques & M. Lagoin & M. M, 2021. "Reducing the impact of radioactivity on quantum circuits in a deep-underground facility," Nature Communications, Nature, vol. 12(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23032-z
    DOI: 10.1038/s41467-021-23032-z
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    Cited by:

    1. V. Iaia & J. Ku & A. Ballard & C. P. Larson & E. Yelton & C. H. Liu & S. Patel & R. McDermott & B. L. T. Plourde, 2022. "Phonon downconversion to suppress correlated errors in superconducting qubits," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    2. M. Lucas & A. V. Danilov & L. V. Levitin & A. Jayaraman & A. J. Casey & L. Faoro & A. Ya. Tzalenchuk & S. E. Kubatkin & J. Saunders & S. E. de Graaf, 2023. "Quantum bath suppression in a superconducting circuit by immersion cooling," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    3. Xianchuang Pan & Yuxuan Zhou & Haolan Yuan & Lifu Nie & Weiwei Wei & Libo Zhang & Jian Li & Song Liu & Zhi Hao Jiang & Gianluigi Catelani & Ling Hu & Fei Yan & Dapeng Yu, 2022. "Engineering superconducting qubits to reduce quasiparticles and charge noise," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
    4. Shingo Kono & Jiahe Pan & Mahdi Chegnizadeh & Xuxin Wang & Amir Youssefi & Marco Scigliuzzo & Tobias J. Kippenberg, 2024. "Mechanically induced correlated errors on superconducting qubits with relaxation times exceeding 0.4 ms," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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