{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:DHEUB4Y2IYXG4TERZCGKMGOHNM","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":"92043d9ac18bf582a2c31373a920af129629d69935fa047d104732a405f44f74","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-02-12T12:19:29Z","title_canon_sha256":"2a4b3cd5c43922f61ca7c62b82e2f8f384f22a4393647a4b5b9fdc98d47c142c"},"schema_version":"1.0","source":{"id":"0902.2096","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0902.2096","created_at":"2026-05-18T03:20:57Z"},{"alias_kind":"arxiv_version","alias_value":"0902.2096v2","created_at":"2026-05-18T03:20:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0902.2096","created_at":"2026-05-18T03:20:57Z"},{"alias_kind":"pith_short_12","alias_value":"DHEUB4Y2IYXG","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"DHEUB4Y2IYXG4TER","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"DHEUB4Y2","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:75ef7b2ce35387109e43027ac21a9f09e5f1512ca3026dd057b54ede8d3bb0d1","target":"graph","created_at":"2026-05-18T03:20:57Z","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 outline an interferometric scheme for the detection of bi-mode and multi-mode spatial entanglement of finite-temperature,interacting Bose gases of fixed particle number. Whether entanglement is present in the gas depends on the existence of the single-particle reduced density matrix between different regions of space. We apply the scheme to the problem of a harmonically trapped boson pair and show that while entanglement is rapidly decreasing with temperature, a significant amount remains for all interaction strengths at zero temperature.Thus, by tuning the interaction parameter, the distri","authors_text":"J. Goold, Libby Heaney, Th. Busch, V. Vedral","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-02-12T12:19:29Z","title":"Detection and engineering of spatial mode entanglement with ultra-cold bosons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0902.2096","kind":"arxiv","version":2},"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:c2a4223a28b74774b350493d2d12c4ac8a08ac93ad3e7fbc4b0d58e8dd8593ea","target":"record","created_at":"2026-05-18T03:20:57Z","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":"92043d9ac18bf582a2c31373a920af129629d69935fa047d104732a405f44f74","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-02-12T12:19:29Z","title_canon_sha256":"2a4b3cd5c43922f61ca7c62b82e2f8f384f22a4393647a4b5b9fdc98d47c142c"},"schema_version":"1.0","source":{"id":"0902.2096","kind":"arxiv","version":2}},"canonical_sha256":"19c940f31a462e6e4c91c88ca619c76b3031f632f4d9454872a1adeefd228caa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"19c940f31a462e6e4c91c88ca619c76b3031f632f4d9454872a1adeefd228caa","first_computed_at":"2026-05-18T03:20:57.471710Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:20:57.471710Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6hlC9ShSCwWLK+s4hGXyjKc8eeB/Jz2gJjSvYjW8TK0Q7QvB9ECWp0DZkIT5FqeSdYYo2rZ2Dto569N+xEhqBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:20:57.472406Z","signed_message":"canonical_sha256_bytes"},"source_id":"0902.2096","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c2a4223a28b74774b350493d2d12c4ac8a08ac93ad3e7fbc4b0d58e8dd8593ea","sha256:75ef7b2ce35387109e43027ac21a9f09e5f1512ca3026dd057b54ede8d3bb0d1"],"state_sha256":"96259a954fbca96b97117963b3317a878d010ec1a5808a0fb96aaea9a8a59210"}