Universal condensation threshold dependence on pump beam size for exciton-polaritons

Universal condensation threshold dependence on pump beam size for exciton-polaritons | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Universal condensation threshold dependence on pump beam size for exciton-polaritons Sergei Koniakhin, Oleg Utesov, Min Park, Daegwang Choi, Soohong Choi, and 8 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5823831/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 10 Jul, 2025 Read the published version in Communications Physics → Version 1 posted You are reading this latest preprint version Abstract Exciton-polariton Bose-Einstein condensates (BECs) in semiconductor microcavities represent a peculiar example of a quantum coherent state on macroscopic lengths scales created by all-optical excitation. Current studies and applications of polariton BECs include quantum simulators, topology, coherent light sources engineering, information processing, and controllable energy transferring. However, many fundamental aspects of condensation are still not comprehensively understood. Here, we perform experimental and theoretical studies of probably the most popular setup -- condensation due to a single Gaussian incoherent laser pumping profile. We have shown that the pumping intensity threshold, a crucial condensation characteristic, is explicitly related to the polariton spectral line properties. The latter are dependent only on several combinations of the respective microstructure parameters. This study paves the way toward controllable condensate creation and utilization. It also provides insights into the characterization of out-of-equilibrium quantum light-matter coherent states. Physical sciences/Physics/Condensed-matter physics/Bose–Einstein condensates Physical sciences/Optics and photonics/Optical physics/Polaritons Physical sciences/Materials science/Materials for optics/Nonlinear optics Physical sciences/Physics/Condensed-matter physics/Quantum fluids and solids Full Text Additional Declarations There is NO Competing Interest. Supplementary Files supplementary.pdf Universal condensation threshold dependence on pump beam size for exciton-polaritons Cite Share Download PDF Status: Published Journal Publication published 10 Jul, 2025 Read the published version in Communications Physics → Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-5823831","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":408836222,"identity":"ea4d3dd4-2409-4dab-b9a1-4a0fefd14aca","order_by":0,"name":"Sergei 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