Spin-entanglement of an atomic pair through coupling to their thermal motion
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Quantum Physics arXiv:2602.09327 (quant-ph) [Submitted on 10 Feb 2026] Title:Spin-entanglement of an atomic pair through coupling to their thermal motion Authors:Poramaporn Ruksasakchai, Lucile Sanchez, Marvin Weyland, Mikkel F. Andersen, Scott Parkins, Stuart S. Szigeti View a PDF of the paper titled Spin-entanglement of an atomic pair through coupling to their thermal motion, by Poramaporn Ruksasakchai and 5 other authors View PDF HTML (experimental) Abstract:The spin-dynamics of two alkali atoms in an optical tweezer is driven by spin-changing collisions that couple the spin-state of the atoms to their relative motion. This paper experimentally studies the resulting spin-states when the relative motion is in a thermal state with k B T much larger than the energies of the spin-states that take part in the dynamics. We find that an initially unentangled spin-state can evolve into an entangled state. This is contrary to the common case when coupling a quantum system to hot degrees of freedom leads to loss of entanglement and not its generation. Moreover, we show that the generated entanglement is technologically useful as it, in principle, can enhance the sensitivity of measurements beyond the standard quantum limit. This may provide a promising avenue for robust entanglement generation for future technologies. Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2602.09327 [quant-ph] (or arXiv:2602.09327v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2602.09327 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Mikkel F. Andersen [view email] [v1] Tue, 10 Feb 2026 01:45:54 UTC (986 KB) Full-text links: Access Paper: View a PDF of the paper titled Spin-entanglement of an atomic pair through coupling to their thermal motion, by Poramaporn Ruksasakchai and 5 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?)