{"paper":{"title":"Competition between Spin Echo and Spin Self-Rephasing in a Trapped Atom Interferometer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.quant-gas"],"primary_cat":"physics.atom-ph","authors_text":"Alexis Bonnin (LNE - SYRTE), Cyrille Solaro (LNE - SYRTE), Franck Pereira dos Santos (LNE - SYRTE), Fr\\'ed\\'eric Combes (LPS), Fr\\'ed\\'eric Pi\\'echon (LPS), Jean-No\\\"el Fuchs (LPTMC, LPS), Matthias Lopez (LNE - SYRTE), Xavier Alauze (LNE - SYRTE)","submitted_at":"2016-06-01T10:59:58Z","abstract_excerpt":"We perform Ramsey interferometry on an ultracold 87Rb ensemble confined in an optical dipoletrap. We use a \\pi-pulse set at the middle of the interferometer to restore the coherence of the spinensemble by canceling out phase inhomogeneities and creating a spin echo in the contrast. However,for high atomic densities, we observe the opposite behavior: the \\pi-pulse accelerates the dephasingof the spin ensemble leading to a faster contrast decay of the interferometer. We understand thisphenomenon as a competition between the spin-echo technique and an exchange-interaction drivenspin self-rephasin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.00218","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":""},"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"}