Long-lived memory effects in the defect bath of superconducting qubits

Quantum Physics arXiv:2608.10087 (quant-ph) [Submitted on 10 Aug 2026] Title:Long-lived memory effects in the defect bath of superconducting qubits Authors:Abhishek Agarwal, Masum Uddin, Shroya Vaidya, Lachlan P. Lindoy, Ehsaneh Daghigh Ahmadi, Tobias Lindström, Sebastian E. de Graaf, Ivan Rungger View a PDF of the paper titled Long-lived memory effects in the defect bath of superconducting qubits, by Abhishek Agarwal and 7 other authors View PDF HTML (experimental) Abstract:We reveal long-lived memory effects in the defect bath of a superconducting transmon qubit through electric-field tuning of two-level system (TLS) defects coupled to the qubit. Using a fast TLS mapping method we observe several hysteretic effects in the TLS environment with memory timescales of the order of seconds, far beyond the lifetimes of individual TLS defects. The observations can be explained by TLS coupling to electric field-polarised charge fluctuators in the defect bath. Our method enables detailed mapping of the dynamics of the bath's coupled microscopic degrees of freedom and the associated memory effects which can introduce temporally correlated noise. This information may be used to improve qubit-stabilisation and quantum error correction protocols. Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2608.10087 [quant-ph] (or arXiv:2608.10087v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2608.10087 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Abhishek Agarwal [view email] [v1] Mon, 10 Aug 2026 18:01:15 UTC (7,040 KB) Full-text links: Access Paper: View a PDF of the paper titled Long-lived memory effects in the defect bath of superconducting qubits, by Abhishek Agarwal and 7 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-08 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?) 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?)