Engineering Near-Infrared Two-Level Systems in Confined Alkali Vapors

Quantum Physics arXiv:2601.16269 (quant-ph) [Submitted on 22 Jan 2026] Title:Engineering Near-Infrared Two-Level Systems in Confined Alkali Vapors Authors:Gilad Orr, Golan Ben-Ari, Eliran Talker View a PDF of the paper titled Engineering Near-Infrared Two-Level Systems in Confined Alkali Vapors, by Gilad Orr and 2 other authors View PDF Abstract:We combined experimental and theoretical investigations of an effective two-level atomic system operating in the near-infrared telecom wavelength regime, realized using hot rubidium vapor confined within a sub-micron-thick cell. In this strongly confined geometry, atomic coherence is profoundly influenced by wall-induced relaxation arising from frequent atom-surface collisions. By analyzing both absorption and fluorescence spectra, we demonstrate that the optical response is dominated by a closed cycling transition, which effectively isolates the atomic dynamics to a two-level configuration despite the presence of multiple hyperfine states. This confinement-induced selection suppresses optical pumping into uncoupled states and enables robust, controllable light-matter interaction at telecom wavelengths within a miniature atomic platform. Our results establish a practical route to realizing near-infrared atomic two-level systems in compact vapor-cell devices, opening new opportunities for integrated quantum photonic technologies, including on-chip quantum memories, telecom-band frequency references, and scalable quantum information processing. Subjects: Quantum Physics (quant-ph); Applied Physics (physics.app-ph); Atomic Physics (physics.atom-ph) Cite as: arXiv:2601.16269 [quant-ph] (or arXiv:2601.16269v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2601.16269 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Eliran Talker [view email] [v1] Thu, 22 Jan 2026 19:04:55 UTC (2,011 KB) Full-text links: Access Paper: View a PDF of the paper titled Engineering Near-Infrared Two-Level Systems in Confined Alkali Vapors, by Gilad Orr and 2 other authorsView PDF view license Current browse context: quant-ph new | recent | 2026-01 Change to browse by: physics physics.app-ph physics.atom-ph 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?)