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Cross-platform comparison of arbitrary quantum states

Author

Listed:
  • D. Zhu

    (University of Maryland
    University of Maryland
    University of Maryland
    IonQ)

  • Z. P. Cian

    (University of Maryland
    University of Maryland
    University of Maryland)

  • C. Noel

    (University of Maryland
    University of Maryland
    University of Maryland
    Duke University)

  • A. Risinger

    (University of Maryland
    University of Maryland
    University of Maryland)

  • D. Biswas

    (University of Maryland
    University of Maryland
    University of Maryland)

  • L. Egan

    (University of Maryland
    University of Maryland
    University of Maryland)

  • Y. Zhu

    (University of Maryland
    University of Maryland)

  • A. M. Green

    (University of Maryland
    University of Maryland)

  • C. Huerta Alderete

    (University of Maryland
    University of Maryland)

  • N. H. Nguyen

    (University of Maryland
    University of Maryland)

  • Q. Wang

    (University of Maryland
    University of Maryland
    University of Maryland)

  • A. Maksymov

    (IonQ)

  • Y. Nam

    (IonQ
    University of Maryland)

  • M. Cetina

    (University of Maryland
    University of Maryland
    University of Maryland
    Duke University)

  • N. M. Linke

    (University of Maryland
    University of Maryland)

  • M. Hafezi

    (University of Maryland
    University of Maryland
    University of Maryland
    University of Maryland)

  • C. Monroe

    (University of Maryland
    University of Maryland
    IonQ
    University of Maryland)

Abstract

As we approach the era of quantum advantage, when quantum computers (QCs) can outperform any classical computer on particular tasks, there remains the difficult challenge of how to validate their performance. While algorithmic success can be easily verified in some instances such as number factoring or oracular algorithms, these approaches only provide pass/fail information of executing specific tasks for a single QC. On the other hand, a comparison between different QCs preparing nominally the same arbitrary circuit provides an insight for generic validation: a quantum computation is only as valid as the agreement between the results produced on different QCs. Such an approach is also at the heart of evaluating metrological standards such as disparate atomic clocks. In this paper, we report a cross-platform QC comparison using randomized and correlated measurements that results in a wealth of information on the QC systems. We execute several quantum circuits on widely different physical QC platforms and analyze the cross-platform state fidelities.

Suggested Citation

  • D. Zhu & Z. P. Cian & C. Noel & A. Risinger & D. Biswas & L. Egan & Y. Zhu & A. M. Green & C. Huerta Alderete & N. H. Nguyen & Q. Wang & A. Maksymov & Y. Nam & M. Cetina & N. M. Linke & M. Hafezi & C., 2022. "Cross-platform comparison of arbitrary quantum states," Nature Communications, Nature, vol. 13(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34279-5
    DOI: 10.1038/s41467-022-34279-5
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    References listed on IDEAS

    as
    1. S. Debnath & N. M. Linke & C. Figgatt & K. A. Landsman & K. Wright & C. Monroe, 2016. "Demonstration of a small programmable quantum computer with atomic qubits," Nature, Nature, vol. 536(7614), pages 63-66, August.
    2. K. Wright & K. M. Beck & S. Debnath & J. M. Amini & Y. Nam & N. Grzesiak & J.-S. Chen & N. C. Pisenti & M. Chmielewski & C. Collins & K. M. Hudek & J. Mizrahi & J. D. Wong-Campos & S. Allen & J. Apisd, 2019. "Benchmarking an 11-qubit quantum computer," Nature Communications, Nature, vol. 10(1), pages 1-6, December.
    3. H. J. Kimble, 2008. "The quantum internet," Nature, Nature, vol. 453(7198), pages 1023-1030, June.
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