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Machine learning enables completely automatic tuning of a quantum device faster than human experts

Author

Listed:
  • H. Moon

    (University of Oxford)

  • D. T. Lennon

    (University of Oxford)

  • J. Kirkpatrick

    (DeepMind)

  • N. M. Esbroeck

    (University of Oxford
    Eindhoven University of Technology)

  • L. C. Camenzind

    (University of Basel)

  • Liuqi Yu

    (University of Basel)

  • F. Vigneau

    (University of Oxford)

  • D. M. Zumbühl

    (University of Basel)

  • G. A. D. Briggs

    (University of Oxford)

  • M. A. Osborne

    (University of Oxford)

  • D. Sejdinovic

    (University of Oxford)

  • E. A. Laird

    (Lancaster University)

  • N. Ares

    (University of Oxford)

Abstract

Variability is a problem for the scalability of semiconductor quantum devices. The parameter space is large, and the operating range is small. Our statistical tuning algorithm searches for specific electron transport features in gate-defined quantum dot devices with a gate voltage space of up to eight dimensions. Starting from the full range of each gate voltage, our machine learning algorithm can tune each device to optimal performance in a median time of under 70 minutes. This performance surpassed our best human benchmark (although both human and machine performance can be improved). The algorithm is approximately 180 times faster than an automated random search of the parameter space, and is suitable for different material systems and device architectures. Our results yield a quantitative measurement of device variability, from one device to another and after thermal cycling. Our machine learning algorithm can be extended to higher dimensions and other technologies.

Suggested Citation

  • H. Moon & D. T. Lennon & J. Kirkpatrick & N. M. Esbroeck & L. C. Camenzind & Liuqi Yu & F. Vigneau & D. M. Zumbühl & G. A. D. Briggs & M. A. Osborne & D. Sejdinovic & E. A. Laird & N. Ares, 2020. "Machine learning enables completely automatic tuning of a quantum device faster than human experts," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-17835-9
    DOI: 10.1038/s41467-020-17835-9
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    Cited by:

    1. Dāgs Olšteins & Gunjan Nagda & Damon J. Carrad & Daria V. Beznasyuk & Christian E. N. Petersen & Sara Martí-Sánchez & Jordi Arbiol & Thomas S. Jespersen, 2023. "Cryogenic multiplexing using selective area grown nanowires," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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