Exceptional Point Superradiant Lasing with Ultranarrow Linewidth
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Quantum Physics arXiv:2602.19030 (quant-ph) [Submitted on 22 Feb 2026] Title:Exceptional Point Superradiant Lasing with Ultranarrow Linewidth Authors:Min Du, Qian Bin, Qing-Yang Qiu, Franco Nori, Xin-You Lü View a PDF of the paper titled Exceptional Point Superradiant Lasing with Ultranarrow Linewidth, by Min Du and 4 other authors View PDF Abstract:Achieving superradiant lasing with an ultranarrow linewidth is crucial for enhancing atomic clock stability in quantum precision measurement. By employing the exceptional point (EP) property of the system, we demonstrate theoretically superradiant lasing with linewidths in the $\mu$Hz range, sustained at the high-power level. This is achieved by incoherently pumping optical lattice clock transitions with ultracold alkaline-earth strontium-87 atoms in the EP of a $\mathcal{PT}$-symmetric system. Physically, the atomic coherence reaches a maximum in the EP, significantly amplifying the superradiance effect and resulting in superradiant lasing with an ultranarrow linewidth. This linewidth is even three orders of magnitude smaller than that of superradiant lasing in the systems without EP. Our work extends the realm of superradiant lasing by introducing the EP property, and offers promising applications for developing atomic clocks with exceptional stability and accuracy. Comments: Subjects: Quantum Physics (quant-ph) Cite as: arXiv:2602.19030 [quant-ph] (or arXiv:2602.19030v1 [quant-ph] for this version) https://doi.org/10.48550/arXiv.2602.19030 Focus to learn more arXiv-issued DOI via DataCite (pending registration) Journal reference: Phys. Rev. Lett. 136, 063602 (2026) Related DOI: https://doi.org/10.1103/sbbk-xdvs Focus to learn more DOI(s) linking to related resources Submission history From: Xinyou Lu Prof. [view email] [v1] Sun, 22 Feb 2026 03:36:50 UTC (1,804 KB) Full-text links: Access Paper: View a PDF of the paper titled Exceptional Point Superradiant Lasing with Ultranarrow Linewidth, by Min Du and 4 other authorsView PDFTeX 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?)