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Measuring error rates of mid-circuit measurements

Author

Listed:
  • Daniel Hothem

    (Sandia National Laboratories)

  • Jordan Hines

    (University of California
    Sandia National Laboratories)

  • Charles Baldwin

    (303 S. Technology Ct.)

  • Dan Gresh

    (303 S. Technology Ct.)

  • Robin Blume-Kohout

    (Sandia National Laboratories)

  • Timothy Proctor

    (Sandia National Laboratories)

Abstract

High-fidelity mid-circuit measurements, which read out the state of specific qubits in a multiqubit processor without destroying them or disrupting their neighbors, are a critical component for useful quantum computing. They enable fault-tolerant quantum error correction, dynamic circuits, and other paths to solving classically intractable problems. But there are few methods to assess their performance comprehensively. In this work, we address this gap by introducing the first randomized benchmarking protocol that measures the rate at which mid-circuit measurements induce errors in many-qubit circuits. Using this protocol, we detect and eliminate previously undetected measurement-induced crosstalk in a 20-qubit trapped-ion quantum computer. Then, we use the same protocol to measure the rate of measurement-induced crosstalk error on a 27-qubit IBM Q processor, and quantify how much of that error is eliminated by dynamical decoupling.

Suggested Citation

  • Daniel Hothem & Jordan Hines & Charles Baldwin & Dan Gresh & Robin Blume-Kohout & Timothy Proctor, 2025. "Measuring error rates of mid-circuit measurements," Nature Communications, Nature, vol. 16(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-60923-x
    DOI: 10.1038/s41467-025-60923-x
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    References listed on IDEAS

    as
    1. Alexander Erhard & Joel J. Wallman & Lukas Postler & Michael Meth & Roman Stricker & Esteban A. Martinez & Philipp Schindler & Thomas Monz & Joseph Emerson & Rainer Blatt, 2019. "Characterizing large-scale quantum computers via cycle benchmarking," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
    2. Robin Blume-Kohout & John King Gamble & Erik Nielsen & Kenneth Rudinger & Jonathan Mizrahi & Kevin Fortier & Peter Maunz, 2017. "Demonstration of qubit operations below a rigorous fault tolerance threshold with gate set tomography," Nature Communications, Nature, vol. 8(1), pages 1-13, April.
    3. Dolev Bluvstein & Simon J. Evered & Alexandra A. Geim & Sophie H. Li & Hengyun Zhou & Tom Manovitz & Sepehr Ebadi & Madelyn Cain & Marcin Kalinowski & Dominik Hangleiter & J. Pablo Bonilla Ataides & N, 2024. "Logical quantum processor based on reconfigurable atom arrays," Nature, Nature, vol. 626(7997), pages 58-65, February.
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