Single-Photon-Level Atomic Frequency Comb Storage in Room Temperature Alkali Vapour

Quantum Physics arXiv:2510.26870 (quant-ph) [Submitted on 30 Oct 2025] Title:Single-Photon-Level Atomic Frequency Comb Storage in Room Temperature Alkali Vapour Authors:Zakary Schofield, Vanderli Laurindo Jr, Ori Ezrah Mor, Patrick M. Ledingham View a PDF of the paper titled Single-Photon-Level Atomic Frequency Comb Storage in Room Temperature Alkali Vapour, by Zakary Schofield and 3 other authors View PDF HTML (experimental) Abstract:We have demonstrated the coherent storage and retrieval of single-photon-level light using the atomic frequency comb protocol in a room temperature rubidium vapour. Velocity-selective optical pumping is used to prepare the comb within the $F=2$ hyperfine ground state of rubidium, with the spacing between peaks coinciding with half the $F = 2 - F =3$ hyperfine splitting of the $5^2$P$_{3/2}$ excited state. Weak coherent states of average photon number $\mu_\mathrm{in} = 0.083(5)$ are stored with pre-programmed recall time of $7.5\,$ns with an efficiency of $\eta_{\textrm{AFC}} = 6.59(5)\,\%$, while two temporally distinct modes have been stored and recalled with $\eta_{\textrm{AFC}} = 2.6(1)\,\%$, allowing for time-bin qubit storage. Finally, the efficiency is observed to be independent of the input pulse polarisation, paving the way for polarisation qubit storage. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2510.26870 [quant-ph] (or arXiv:2510.26870v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2510.26870 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Patrick Ledingham [view email] [v1] Thu, 30 Oct 2025 18:00:00 UTC (2,921 KB) Full-text links: Access Paper: View a PDF of the paper titled Single-Photon-Level Atomic Frequency Comb Storage in Room Temperature Alkali Vapour, by Zakary Schofield and 3 other authorsView PDFHTML (experimental)TeX Source view license Current browse context: quant-ph new | recent | 2025-10 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?)