{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:7WG6MNI4MRSO4HSSJAM3TH25UH","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":"fc971c360800347387ec81e9405c3da49acb590d3b10b1636859726edddb5d99","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-08-08T08:43:48Z","title_canon_sha256":"e1874e8e37a0c2c78d83f3d23c645a6b57df45053832c1c7717ac692d0c37c59"},"schema_version":"1.0","source":{"id":"1708.02407","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1708.02407","created_at":"2026-05-18T00:16:56Z"},{"alias_kind":"arxiv_version","alias_value":"1708.02407v1","created_at":"2026-05-18T00:16:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1708.02407","created_at":"2026-05-18T00:16:56Z"},{"alias_kind":"pith_short_12","alias_value":"7WG6MNI4MRSO","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_16","alias_value":"7WG6MNI4MRSO4HSS","created_at":"2026-05-18T12:31:05Z"},{"alias_kind":"pith_short_8","alias_value":"7WG6MNI4","created_at":"2026-05-18T12:31:05Z"}],"graph_snapshots":[{"event_id":"sha256:096ff8a8491a26c822282742faeddd56d54e0f282917ab2ea0ab49153ac78d61","target":"graph","created_at":"2026-05-18T00:16:56Z","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":"A key resource for distributed quantum-enhanced protocols is entanglement between spatially separated modes. Yet, the robust generation and detection of nonlocal entanglement between spatially separated regions of an ultracold atomic system remains a challenge. Here, we use spin mixing in a tightly confined Bose-Einstein condensate to generate an entangled state of indistinguishable particles in a single spatial mode. We show experimentally that this local entanglement can be spatially distributed by self-similar expansion of the atomic cloud. Spatially resolved spin read-out is used to reveal","authors_text":"Anika Fr\\\"olian, Daniel Linnemann, Helmut Strobel, Markus K. Oberthaler, Martin G\\\"arttner, Maximilian Pr\\\"ufer, Philipp Kunkel, Thomas Gasenzer","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-08-08T08:43:48Z","title":"Spatially distributed multipartite entanglement enables Einstein-Podolsky-Rosen steering of atomic clouds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1708.02407","kind":"arxiv","version":1},"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":"sha256:91bc30adec12eb5c610cde09a9f56ba29a9237eb0e13102f433d7a35a4ba0bb5","target":"record","created_at":"2026-05-18T00:16:56Z","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":"fc971c360800347387ec81e9405c3da49acb590d3b10b1636859726edddb5d99","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2017-08-08T08:43:48Z","title_canon_sha256":"e1874e8e37a0c2c78d83f3d23c645a6b57df45053832c1c7717ac692d0c37c59"},"schema_version":"1.0","source":{"id":"1708.02407","kind":"arxiv","version":1}},"canonical_sha256":"fd8de6351c6464ee1e524819b99f5da1ca07cfc9daad5e57a736a395269d5419","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd8de6351c6464ee1e524819b99f5da1ca07cfc9daad5e57a736a395269d5419","first_computed_at":"2026-05-18T00:16:56.248434Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:16:56.248434Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aCjpGY+Hm9M+laL4JU+tEuCC+g9VCbbcYyaIklJtrm1vRkCpvBlPEPpADct8sKIzhMWzAHYQclIE1XQUa4fTCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:16:56.249231Z","signed_message":"canonical_sha256_bytes"},"source_id":"1708.02407","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:91bc30adec12eb5c610cde09a9f56ba29a9237eb0e13102f433d7a35a4ba0bb5","sha256:096ff8a8491a26c822282742faeddd56d54e0f282917ab2ea0ab49153ac78d61"],"state_sha256":"96c0cb42347d9d325730c72c088388d40668de03e06a222780b2e158064b0a5f"}