{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:D55QXKIT43HY2TMNLZY7YJBJKC","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"0eb476c0cf6a8afb8ede27300d35264893386e3dbafb660bbe70754e0736d3f4","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-02-06T20:04:12Z","title_canon_sha256":"44d94a618744396afd7530b5c83d1895e48f04e6c9fedf9d0dd412bf5a8272f8"},"schema_version":"1.0","source":{"id":"1802.02190","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.02190","created_at":"2026-05-17T23:52:08Z"},{"alias_kind":"arxiv_version","alias_value":"1802.02190v4","created_at":"2026-05-17T23:52:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.02190","created_at":"2026-05-17T23:52:08Z"},{"alias_kind":"pith_short_12","alias_value":"D55QXKIT43HY","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"D55QXKIT43HY2TMN","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"D55QXKIT","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:67afe991ec71d13e8e897fe2e7d7ffc98ac65d760a3ad9c6c9c7c2320403d630","target":"graph","created_at":"2026-05-17T23:52:08Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We present an elegant application of matterwave interferometry to the velocimetry of cold atoms whereby, in analogy to Fourier transform spectroscopy, the 1-D velocity distribution is manifest in the frequency domain of the interferometer output. By using stimulated Raman transitions between hyperfine ground states to perform a three-pulse interferometer sequence, we have measured the velocity distributions of clouds of freely-expanding $^{85}$Rb atoms with temperatures of 33 $\\mu$K and 17 $\\mu$K. Quadrature measurement of the interferometer output as a function of the temporal asymmetry yield","authors_text":"David Elcock, Jack Saywell, Max Carey, Mohammad Belal, Tim Freegarde","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-02-06T20:04:12Z","title":"Velocimetry of cold atoms by matterwave interferometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.02190","kind":"arxiv","version":4},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:6c67b4d8f862a93db63722bcc06b5b22517eebbb51a49581702b6bf12a1ae4b8","target":"record","created_at":"2026-05-17T23:52:08Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"0eb476c0cf6a8afb8ede27300d35264893386e3dbafb660bbe70754e0736d3f4","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2018-02-06T20:04:12Z","title_canon_sha256":"44d94a618744396afd7530b5c83d1895e48f04e6c9fedf9d0dd412bf5a8272f8"},"schema_version":"1.0","source":{"id":"1802.02190","kind":"arxiv","version":4}},"canonical_sha256":"1f7b0ba913e6cf8d4d8d5e71fc242950906f2cd594598acc919c0853d7c3de8b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1f7b0ba913e6cf8d4d8d5e71fc242950906f2cd594598acc919c0853d7c3de8b","first_computed_at":"2026-05-17T23:52:08.077005Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:08.077005Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"p9JdaUaO8I036RqqKx3LxrSMtrmLM7BQFFKHCLdnPLI09w1ZzeczgfYnoCcke7Vx1d1Wife0VmDUd1ha0ES/Ag==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:08.077513Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.02190","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6c67b4d8f862a93db63722bcc06b5b22517eebbb51a49581702b6bf12a1ae4b8","sha256:67afe991ec71d13e8e897fe2e7d7ffc98ac65d760a3ad9c6c9c7c2320403d630"],"state_sha256":"3494ab92795bfc3a9c02c9527c6e74733cac51de30e75f35656c1d5bb85be54f"}