Autonomous stabilization of many-body entanglement with Floquet Hamiltonians and weak measurement

Quantum Physics arXiv:2609.21086 (quant-ph) [Submitted on 17 Sep 2026] Title:Autonomous stabilization of many-body entanglement with Floquet Hamiltonians and weak measurement Authors:Charlotte Franke, Dorian A. Gangloff View a PDF of the paper titled Autonomous stabilization of many-body entanglement with Floquet Hamiltonians and weak measurement, by Charlotte Franke and Dorian A. Gangloff View PDF HTML (experimental) Abstract:Reaching a technological advantage with large quantum systems requires safeguarding their many-body entanglement. Dissipation typically acts to decohere a quantum system via random projective noise but, when judiciously engineered together with coherent interactions, it can funnel the system towards a target entangled state. The native interactions and dissipative channels available to most systems are, however, difficult to combine effectively. Here we propose interleaving Floquet Hamiltonian engineering, which allows the construction of non-native coherent interactions, with weak measurement, which enables a tuneable dissipative channel, to enable programmable and autonomous stabilization of many-body entanglement. We show this analytically and numerically for the central-spin system of a semiconductor quantum dot, for which we construct spin-squeezed and Schrödinger-cat states that are stabilized against realistic levels of dephasing. Our approach is applicable to any system compatible with periodic drives and tuneable measurement strength and could enable novel approaches to practical error correction. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2609.21086 [quant-ph] (or arXiv:2609.21086v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2609.21086 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Dorian Gangloff [view email] [v1] Thu, 17 Sep 2026 21:01:26 UTC (438 KB) Full-text links: Access Paper: View a PDF of the paper titled Autonomous stabilization of many-body entanglement with Floquet Hamiltonians and weak measurement, by Charlotte Franke and Dorian A. GangloffView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-09 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?)