High-flux sub-Poissonian twin-beam generation from warm atomic vapor
Summarize this article with:
Quantum Physics arXiv:2604.18832 (quant-ph) [Submitted on 20 Apr 2026] Title:High-flux sub-Poissonian twin-beam generation from warm atomic vapor Authors:Priya Drashni, Hari P. Lamsal, Belle A. White, Noah A. Crum, George Siopsis, Tian Li View a PDF of the paper titled High-flux sub-Poissonian twin-beam generation from warm atomic vapor, by Priya Drashni and 5 other authors View PDF HTML (experimental) Abstract:We demonstrate sub-Poissonian twin-beam generation via near-degenerate spontaneous four-wave mixing in warm $^{85}\mathrm{Rb}$ at 795 nm. The twin beams exhibit approximately $5.5~\mathrm{dB}$ of intensity-difference squeezing in free space and about $3~\mathrm{dB}$ after coupling into polarization-maintaining fibers. Time-resolved photon counting yields Mandel parameters of $Q \approx -0.7$ for each beam, revealing strong photon-number squeezing in each beam individually. The temporal correlation between the twin photons exhibits a distinctive flat-topped profile, reflecting multiple $\chi^{(3)}$ processes in the atomic medium and showing excellent agreement with theory. This fiber-compatible, near atomic-resonance, high-flux sub-Poissonian twin-photon source is well suited for integration into scalable quantum-enhanced sensing and information processing applications. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2604.18832 [quant-ph] (or arXiv:2604.18832v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2604.18832 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Submission history From: Tian Li [view email] [v1] Mon, 20 Apr 2026 20:55:31 UTC (502 KB) Full-text links: Access Paper: View a PDF of the paper titled High-flux sub-Poissonian twin-beam generation from warm atomic vapor, by Priya Drashni and 5 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2026-04 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?)