Detailed, interpretable characterization of mid-circuit measurement on a transmon qubit
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Quantum Physics arXiv:2602.03938 (quant-ph) [Submitted on 3 Feb 2026] Title:Detailed, interpretable characterization of mid-circuit measurement on a transmon qubit Authors:Piper C. Wysocki, Luke D. Burkhart, Madeline H. Morocco, Corey I. Ostrove, Riley J. Murray, Tristan Brown, Jeffrey M. Gertler, David K. Kim, Nathan E. Miller, Bethany M. Niedzielski, Katrina M. Sliwa, Robin Blume-Kohout, Gabriel O. Samach, Mollie E. Schwartz, Kenneth M. Rudinger View a PDF of the paper titled Detailed, interpretable characterization of mid-circuit measurement on a transmon qubit, by Piper C. Wysocki and 14 other authors View PDF HTML (experimental) Abstract:Mid-circuit measurements (MCMs) are critical components of the quantum error correction protocols expected to enable utility-scale quantum computing. MCMs can be modeled by quantum instruments (a type of quantum operation or process), which can be characterized self-consistently using gate set tomography. However, experimentally estimated quantum instruments are often hard to interpret or relate to device physics. We address this challenge by adapting the error generator formalism -- previously used to interpret noisy quantum gates by decomposing their error processes into physically meaningful sums of "elementary errors" -- to MCMs. We deploy our new analysis on a transmon qubit device to tease out and quantify error mechanisms including amplitude damping, readout error, and imperfect collapse. We examine in detail how the magnitudes of these errors vary with the readout pulse amplitude, recover the key features of dispersive readout predicted by theory, and show that these features can be modeled parsimoniously using a reduced model with just a few parameters. Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2602.03938 [quant-ph] (or arXiv:2602.03938v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2602.03938 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Piper Wysocki [view email] [v1] Tue, 3 Feb 2026 19:00:28 UTC (2,097 KB) Full-text links: Access Paper: View a PDF of the paper titled Detailed, interpretable characterization of mid-circuit measurement on a transmon qubit, by Piper C. Wysocki and 14 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-02 References & Citations INSPIRE HEP NASA ADSGoogle Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer (What is the Explorer?) Connected Papers Toggle Connected Papers (What is Connected Papers?) Litmaps Toggle Litmaps (What is Litmaps?) scite.ai Toggle scite Smart Citations (What are Smart Citations?) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv (What is alphaXiv?) Links to Code Toggle CatalyzeX Code Finder for Papers (What is CatalyzeX?) DagsHub Toggle DagsHub (What is DagsHub?) GotitPub Toggle Gotit.pub (What is GotitPub?) Huggingface Toggle Hugging Face (What is Huggingface?) Links to Code Toggle Papers with Code (What is Papers with Code?) ScienceCast Toggle ScienceCast (What is ScienceCast?) Demos Demos Replicate Toggle Replicate (What is Replicate?) Spaces Toggle Hugging Face Spaces (What is Spaces?) Spaces Toggle TXYZ.AI (What is TXYZ.AI?) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower (What are Influence Flowers?) Core recommender toggle CORE Recommender (What is CORE?) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs. Which authors of this paper are endorsers? | Disable MathJax (What is MathJax?)