{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:5QPECHXLPHA4WEC4I4B5I47TPI","short_pith_number":"pith:5QPECHXL","schema_version":"1.0","canonical_sha256":"ec1e411eeb79c1cb105c4703d473f37a095a915fc272886b7cc70215fca90938","source":{"kind":"arxiv","id":"1003.5925","version":2},"attestation_state":"computed","paper":{"title":"Spin self-rephasing and very long coherence times in a trapped atomic ensemble","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"Christian Deutsch, Clement Lacro\\^ute, Fernando Ramirez-Martinez, Franck Lalo\\\"e, Fr\\'ed\\'eric Pi\\'echon, Friedemann Reinhard, Jakob Reichel, Jean-No\\\"el Fuchs, Peter Rosenbusch, Tobias Schneider","submitted_at":"2010-03-30T21:18:54Z","abstract_excerpt":"We perform Ramsey spectroscopy on the ground state of ultra-cold 87Rb atoms magnetically trapped on a chip in the Knudsen regime. Field inhomogeneities over the sample should limit the 1/e contrast decay time to about 3 s, while decay times of 58 s are actually observed. We explain this surprising result by a spin self-rephasing mechanism induced by the identical spin rotation effect originating from particle indistinguishability. We propose a theory of this synchronization mechanism and obtain good agreement with the experimental observations. The effect is general and susceptible to appear i"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1003.5925","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-03-30T21:18:54Z","cross_cats_sorted":["physics.atom-ph"],"title_canon_sha256":"55e29af60e92966101ba263977ec0b73fa3a3055d0e60320b32639dd919cac2c","abstract_canon_sha256":"4acae34b5eb56a598b20fc5a341520dc6f5f25b0298f1d5cb3bbe5794096e963"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:24:25.942921Z","signature_b64":"E5DyXxzIwDtSLziPCyF2Dk7X+f7AHveQQtswi5S3P5dAf1rR5HLf7i3xgTg+y+QlwdoRZZVL26gvQe4KyLKXDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ec1e411eeb79c1cb105c4703d473f37a095a915fc272886b7cc70215fca90938","last_reissued_at":"2026-05-18T02:24:25.942354Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:24:25.942354Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spin self-rephasing and very long coherence times in a trapped atomic ensemble","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph"],"primary_cat":"quant-ph","authors_text":"Christian Deutsch, Clement Lacro\\^ute, Fernando Ramirez-Martinez, Franck Lalo\\\"e, Fr\\'ed\\'eric Pi\\'echon, Friedemann Reinhard, Jakob Reichel, Jean-No\\\"el Fuchs, Peter Rosenbusch, Tobias Schneider","submitted_at":"2010-03-30T21:18:54Z","abstract_excerpt":"We perform Ramsey spectroscopy on the ground state of ultra-cold 87Rb atoms magnetically trapped on a chip in the Knudsen regime. Field inhomogeneities over the sample should limit the 1/e contrast decay time to about 3 s, while decay times of 58 s are actually observed. We explain this surprising result by a spin self-rephasing mechanism induced by the identical spin rotation effect originating from particle indistinguishability. We propose a theory of this synchronization mechanism and obtain good agreement with the experimental observations. The effect is general and susceptible to appear i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.5925","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1003.5925","created_at":"2026-05-18T02:24:25.942450+00:00"},{"alias_kind":"arxiv_version","alias_value":"1003.5925v2","created_at":"2026-05-18T02:24:25.942450+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.5925","created_at":"2026-05-18T02:24:25.942450+00:00"},{"alias_kind":"pith_short_12","alias_value":"5QPECHXLPHA4","created_at":"2026-05-18T12:26:04.259169+00:00"},{"alias_kind":"pith_short_16","alias_value":"5QPECHXLPHA4WEC4","created_at":"2026-05-18T12:26:04.259169+00:00"},{"alias_kind":"pith_short_8","alias_value":"5QPECHXL","created_at":"2026-05-18T12:26:04.259169+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/5QPECHXLPHA4WEC4I4B5I47TPI","json":"https://pith.science/pith/5QPECHXLPHA4WEC4I4B5I47TPI.json","graph_json":"https://pith.science/api/pith-number/5QPECHXLPHA4WEC4I4B5I47TPI/graph.json","events_json":"https://pith.science/api/pith-number/5QPECHXLPHA4WEC4I4B5I47TPI/events.json","paper":"https://pith.science/paper/5QPECHXL"},"agent_actions":{"view_html":"https://pith.science/pith/5QPECHXLPHA4WEC4I4B5I47TPI","download_json":"https://pith.science/pith/5QPECHXLPHA4WEC4I4B5I47TPI.json","view_paper":"https://pith.science/paper/5QPECHXL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1003.5925&json=true","fetch_graph":"https://pith.science/api/pith-number/5QPECHXLPHA4WEC4I4B5I47TPI/graph.json","fetch_events":"https://pith.science/api/pith-number/5QPECHXLPHA4WEC4I4B5I47TPI/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5QPECHXLPHA4WEC4I4B5I47TPI/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5QPECHXLPHA4WEC4I4B5I47TPI/action/storage_attestation","attest_author":"https://pith.science/pith/5QPECHXLPHA4WEC4I4B5I47TPI/action/author_attestation","sign_citation":"https://pith.science/pith/5QPECHXLPHA4WEC4I4B5I47TPI/action/citation_signature","submit_replication":"https://pith.science/pith/5QPECHXLPHA4WEC4I4B5I47TPI/action/replication_record"}},"created_at":"2026-05-18T02:24:25.942450+00:00","updated_at":"2026-05-18T02:24:25.942450+00:00"}