{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:TUPLJ52A3JCT2W7ZEMZG5RAJGF","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":"9933ae8c1710c57b74a01abc4b10fca51099a9932f69bc450d7dc4b0c2c01c91","cross_cats_sorted":["nucl-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-10-14T08:21:55Z","title_canon_sha256":"9e732c538ad8c3490e9af48b73e8640329050a41e7344977d90f5f107157b8c0"},"schema_version":"1.0","source":{"id":"2210.07623","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2210.07623","created_at":"2026-07-05T07:12:47Z"},{"alias_kind":"arxiv_version","alias_value":"2210.07623v1","created_at":"2026-07-05T07:12:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2210.07623","created_at":"2026-07-05T07:12:47Z"},{"alias_kind":"pith_short_12","alias_value":"TUPLJ52A3JCT","created_at":"2026-07-05T07:12:47Z"},{"alias_kind":"pith_short_16","alias_value":"TUPLJ52A3JCT2W7Z","created_at":"2026-07-05T07:12:47Z"},{"alias_kind":"pith_short_8","alias_value":"TUPLJ52A","created_at":"2026-07-05T07:12:47Z"}],"graph_snapshots":[{"event_id":"sha256:e258c82835864969ead8f221410877ae10691fdfb8c71f5d6762d31ea22f0d38","target":"graph","created_at":"2026-07-05T07:12:47Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2210.07623/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the results of a new experimental study of the quantum entanglement of photon pairs produced in positron-electron annihilation at rest. The experimental setup includes a system of Compton polarimeters to measure the Compton scattering of annihilation photons in entangled and decoherent states. Decoherent states are prepared by pre-scattering of one of the initial photons prior to measurements in polarimeters. For the first time, a direct comparison of the polarization correlations of annihilation photons in the entangled and thus prepared separable states has been carried out. The a","authors_text":"Alexander Baranov, Alexander Ivashkin, Alexander Strizhak, Dzhonrid Abdurashitov, Fedor Guber, Igor Tkachev, Sergey Morozov, Sultan Musin","cross_cats":["nucl-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-10-14T08:21:55Z","title":"Entanglement of annihilation photons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2210.07623","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":"sha256:75480cf7fc61aa2b6867aac98d9cb28cf06661916cbfcc1ff520a560383664ad","target":"record","created_at":"2026-07-05T07:12:47Z","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":"9933ae8c1710c57b74a01abc4b10fca51099a9932f69bc450d7dc4b0c2c01c91","cross_cats_sorted":["nucl-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"quant-ph","submitted_at":"2022-10-14T08:21:55Z","title_canon_sha256":"9e732c538ad8c3490e9af48b73e8640329050a41e7344977d90f5f107157b8c0"},"schema_version":"1.0","source":{"id":"2210.07623","kind":"arxiv","version":1}},"canonical_sha256":"9d1eb4f740da453d5bf923326ec4093147d66ae3707397ff8acfe8373aee249a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9d1eb4f740da453d5bf923326ec4093147d66ae3707397ff8acfe8373aee249a","first_computed_at":"2026-07-05T07:12:47.052266Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:12:47.052266Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hYFgkKri6NmFsROwbA6/ggbL8S9aom5xdx36fBfCZe0GLz7EpYFmn365BXg+yn7L1RjbxI5nP3zuoHk6xENLBA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:12:47.052723Z","signed_message":"canonical_sha256_bytes"},"source_id":"2210.07623","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:75480cf7fc61aa2b6867aac98d9cb28cf06661916cbfcc1ff520a560383664ad","sha256:e258c82835864969ead8f221410877ae10691fdfb8c71f5d6762d31ea22f0d38"],"state_sha256":"aa7fdb000bf1ed1adc01ed0fd62690e7a9ad281727abcdd6938ee576ac5343a5"}