{"paper":{"title":"A framework for continuous superradiant laser operation via sequential transport of atoms","license":"http://creativecommons.org/licenses/by/4.0/","headline":"Synchronization of two atomic ensembles in a shared cavity produces a single narrow superradiant line at their weighted average frequency.","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Bruno Bellomo, Jana El Badawi, Marion Delehaye","submitted_at":"2025-09-09T15:11:28Z","abstract_excerpt":"We perform a theoretical study of a continuous superradiant laser supporting its experimental realization at FEMTO-ST using two sequentially-emitting ensembles of ${}^{171}\\mathrm{Yb}$ atoms coupled to the same Fabry-Perot cavity. Using an open quantum system approach, we identify for the simplest case the parameter space where the laser reaches tens of picowatts of power with a sub-millihertz linewidth. Studying the impact of inhomogeneous frequency broadening and variations in atom-cavity coupling on the superradiant emission, we find the laser properties robust with respect to such perturba"},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"We find for balanced and imbalanced atom numbers that synchronization leads in a certain parameter space to a single narrow spectral line whose central frequency follows the weighted average frequency.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"Atoms within each ensemble have identical detunings and equal coupling strengths to the cavity, while the two ensembles differ only in their common detuning value; this equal-coupling and equal-detuning premise is stated for the two-site configuration and is required for the synchronization result to produce a single weighted-average line.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"Sequential transport of two 171Yb atomic ensembles into a shared cavity enables continuous superradiant emission with tens of picowatts power, sub-millihertz linewidth, and a single spectral line at the weighted-average frequency via dipole synchronization.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Synchronization of two atomic ensembles in a shared cavity produces a single narrow superradiant line at their weighted average frequency.","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"1d2f5bad1515a759de669cf3cb2f43e4f0285290978a4f1d9627ded195fa9811"},"source":{"id":"2509.07833","kind":"arxiv","version":3},"verdict":{"id":"5aae2890-6b83-4296-8f2e-437ce9cdecc9","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-18T18:07:47.067849Z","strongest_claim":"We find for balanced and imbalanced atom numbers that synchronization leads in a certain parameter space to a single narrow spectral line whose central frequency follows the weighted average frequency.","one_line_summary":"Sequential transport of two 171Yb atomic ensembles into a shared cavity enables continuous superradiant emission with tens of picowatts power, sub-millihertz linewidth, and a single spectral line at the weighted-average frequency via dipole synchronization.","pipeline_version":"pith-pipeline@v0.9.0","weakest_assumption":"Atoms within each ensemble have identical detunings and equal coupling strengths to the cavity, while the two ensembles differ only in their common detuning value; this equal-coupling and equal-detuning premise is stated for the two-site configuration and is required for the synchronization result to produce a single weighted-average line.","pith_extraction_headline":"Synchronization of two atomic ensembles in a shared cavity produces a single narrow superradiant line at their weighted average frequency."},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2509.07833/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":2,"snapshot_sha256":"43796c023f4276299d35f659388eefef5751545b8811bb3a3449356b0099228a"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}