{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:3AKEUB2TESKAOMTLRZMR2NS23D","short_pith_number":"pith:3AKEUB2T","schema_version":"1.0","canonical_sha256":"d8144a0753249407326b8e591d365ad8d91ddd6f8e37d3dd8b59640c7321c046","source":{"kind":"arxiv","id":"1908.11839","version":2},"attestation_state":"computed","paper":{"title":"Long rotational coherence times of molecules in a magnetic trap","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"B. E. Sauer, H. J. Williams, J. Aldegunde, Jeremy M. Hutson, L. Caldwell, M. R. Tarbutt, N. J. Fitch","submitted_at":"2019-08-30T17:08:23Z","abstract_excerpt":"Polar molecules in superpositions of rotational states exhibit long-range dipolar interactions, but maintaining their coherence in a trapped sample is a challenge. We present calculations that show many laser-coolable molecules have convenient rotational transitions that are exceptionally insensitive to magnetic fields. We verify this experimentally for CaF where we find a transition with sensitivity below 5 Hz G$^{-1}$ and use it to demonstrate a rotational coherence time of 6.4(8) ms in a magnetic trap. Simulations suggest it is feasible to extend this to more than 1 s using a smaller cloud "},"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":"1908.11839","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2019-08-30T17:08:23Z","cross_cats_sorted":[],"title_canon_sha256":"0a3b53c3c0217d67c85d9da810fef98ccd65f2898b4cc67e70220a2f835e21e3","abstract_canon_sha256":"ed2e6fbe5bb970f963aae0f10179a5aefe96f785f62d5ba203abaa150fc05705"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:40:44.242137Z","signature_b64":"4kg5MEfk+YP2CJQTM/8QnqQE2NsTvL16weQnuxFbT7/ou10+VfRu5J0ovR3d/2CswxnJJUp9C8LbxjTBoiTJAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d8144a0753249407326b8e591d365ad8d91ddd6f8e37d3dd8b59640c7321c046","last_reissued_at":"2026-07-05T00:40:44.241611Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:40:44.241611Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Long rotational coherence times of molecules in a magnetic trap","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.atom-ph","authors_text":"B. E. Sauer, H. J. Williams, J. Aldegunde, Jeremy M. Hutson, L. Caldwell, M. R. Tarbutt, N. J. Fitch","submitted_at":"2019-08-30T17:08:23Z","abstract_excerpt":"Polar molecules in superpositions of rotational states exhibit long-range dipolar interactions, but maintaining their coherence in a trapped sample is a challenge. We present calculations that show many laser-coolable molecules have convenient rotational transitions that are exceptionally insensitive to magnetic fields. We verify this experimentally for CaF where we find a transition with sensitivity below 5 Hz G$^{-1}$ and use it to demonstrate a rotational coherence time of 6.4(8) ms in a magnetic trap. Simulations suggest it is feasible to extend this to more than 1 s using a smaller cloud "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.11839","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/1908.11839/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1908.11839","created_at":"2026-07-05T00:40:44.241671+00:00"},{"alias_kind":"arxiv_version","alias_value":"1908.11839v2","created_at":"2026-07-05T00:40:44.241671+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1908.11839","created_at":"2026-07-05T00:40:44.241671+00:00"},{"alias_kind":"pith_short_12","alias_value":"3AKEUB2TESKA","created_at":"2026-07-05T00:40:44.241671+00:00"},{"alias_kind":"pith_short_16","alias_value":"3AKEUB2TESKAOMTL","created_at":"2026-07-05T00:40:44.241671+00:00"},{"alias_kind":"pith_short_8","alias_value":"3AKEUB2T","created_at":"2026-07-05T00:40:44.241671+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/3AKEUB2TESKAOMTLRZMR2NS23D","json":"https://pith.science/pith/3AKEUB2TESKAOMTLRZMR2NS23D.json","graph_json":"https://pith.science/api/pith-number/3AKEUB2TESKAOMTLRZMR2NS23D/graph.json","events_json":"https://pith.science/api/pith-number/3AKEUB2TESKAOMTLRZMR2NS23D/events.json","paper":"https://pith.science/paper/3AKEUB2T"},"agent_actions":{"view_html":"https://pith.science/pith/3AKEUB2TESKAOMTLRZMR2NS23D","download_json":"https://pith.science/pith/3AKEUB2TESKAOMTLRZMR2NS23D.json","view_paper":"https://pith.science/paper/3AKEUB2T","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1908.11839&json=true","fetch_graph":"https://pith.science/api/pith-number/3AKEUB2TESKAOMTLRZMR2NS23D/graph.json","fetch_events":"https://pith.science/api/pith-number/3AKEUB2TESKAOMTLRZMR2NS23D/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/3AKEUB2TESKAOMTLRZMR2NS23D/action/timestamp_anchor","attest_storage":"https://pith.science/pith/3AKEUB2TESKAOMTLRZMR2NS23D/action/storage_attestation","attest_author":"https://pith.science/pith/3AKEUB2TESKAOMTLRZMR2NS23D/action/author_attestation","sign_citation":"https://pith.science/pith/3AKEUB2TESKAOMTLRZMR2NS23D/action/citation_signature","submit_replication":"https://pith.science/pith/3AKEUB2TESKAOMTLRZMR2NS23D/action/replication_record"}},"created_at":"2026-07-05T00:40:44.241671+00:00","updated_at":"2026-07-05T00:40:44.241671+00:00"}