{"paper":{"title":"Sub-Doppler cooling of bosonic strontium in a two-color MOT","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"Florian Jessen, J\\'ozsef Fort\\'agh, L\\H{o}rinc S\\'ark\\'any, Mil\\'an J\\'anos Negyedi, Shubha Deutschle","submitted_at":"2025-07-03T15:04:29Z","abstract_excerpt":"We report a two-color magneto-optical trap that continuously operates on the $\\mathrm{(5s^2)\\:^1S_0-(5s5p)\\:^1P_1}$ and $\\mathrm{(5s5p)\\:^3P_2-(5s5d)\\:^3D_3}$ transitions in $\\mathrm{^{88}Sr}$. Owing to the sub-Doppler cooling from the metastable $\\mathrm{(5s5p)\\:^3P_2}$ state, a bimodal momentum distribution is observed, with the cold part of the ensemble reaching a temperature of 105 $\\mathrm{\\mu}$K. A detailed simulation is established to explain the data. The absolute frequency of the $\\mathrm{(5s5p)\\:^3P_2-(5s5d)\\:^3D_3}$ transition is measured to be 603 976 473 ${\\pm}$ 2 MHz using a freq"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.02693","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2507.02693/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":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}