{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:6LTNFSETRV3AMM5OKKVISW6U5L","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":"450bab846e71a658ec7082955650728a6ad7db81d57f68e81b20bdfa0bbd2839","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-01-18T19:33:59Z","title_canon_sha256":"cf741d99e2578b87fe6d6c72b517420fb80a05c456431efa7e221a8312646e4e"},"schema_version":"1.0","source":{"id":"1301.4471","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.4471","created_at":"2026-05-18T01:52:05Z"},{"alias_kind":"arxiv_version","alias_value":"1301.4471v2","created_at":"2026-05-18T01:52:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.4471","created_at":"2026-05-18T01:52:05Z"},{"alias_kind":"pith_short_12","alias_value":"6LTNFSETRV3A","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"6LTNFSETRV3AMM5O","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"6LTNFSET","created_at":"2026-05-18T12:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:5b626a5c085770048db05e624595df2ab21a1bb97f5cc2068fedded6c64a1764","target":"graph","created_at":"2026-05-18T01:52:05Z","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":"Photon-number correlation measurements are performed on bright squeezed vacuum states using a standard Bell-test setup, and quantum correlations are observed for conjugate polarization-frequency modes. We further test the entanglement witnesses for these states and demonstrate the violation of the separability criteria, which infers that all the macroscopic Bell states, containing typically $10^6$ photons per pulse, are polarization entangled. The study also reveals the symmetry of macroscopic Bell states with respect to local polarization transformations.","authors_text":"Bhaskar Kanseri, Georgy Rytikov, Gerd Leuchs, Maria Chekhova, Timur Iskhakov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-01-18T19:33:59Z","title":"Multi-photon nonclassical correlations in entangled squeezed vacuum states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.4471","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:c473a582335b4be5c55a934aed2a78183da5c71274589c9fc463308135510129","target":"record","created_at":"2026-05-18T01:52:05Z","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":"450bab846e71a658ec7082955650728a6ad7db81d57f68e81b20bdfa0bbd2839","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2013-01-18T19:33:59Z","title_canon_sha256":"cf741d99e2578b87fe6d6c72b517420fb80a05c456431efa7e221a8312646e4e"},"schema_version":"1.0","source":{"id":"1301.4471","kind":"arxiv","version":2}},"canonical_sha256":"f2e6d2c8938d760633ae52aa895bd4eadb9749c2d68b0a941ccc6411f7c2a62a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2e6d2c8938d760633ae52aa895bd4eadb9749c2d68b0a941ccc6411f7c2a62a","first_computed_at":"2026-05-18T01:52:05.737779Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:05.737779Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jx2u/sVXSYpa2VfmGTLg2bUoV9eufnE6U29Nr90R54wL45dPKbV/zHxKtKhjLBnBWkk8793d0xGr1odAdDM0Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:05.738461Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.4471","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c473a582335b4be5c55a934aed2a78183da5c71274589c9fc463308135510129","sha256:5b626a5c085770048db05e624595df2ab21a1bb97f5cc2068fedded6c64a1764"],"state_sha256":"446d89db2c4e4e36baaef4242524f03b05c0e10811869fe3610501a2cd29673d"}