{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:T7TPUXJ5JGTU76F522ZVZW5265","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":"5ccec260b63791170b75afa965e18b93758b674d6f1d8c7f571cd33999642f6d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-02-05T15:59:16Z","title_canon_sha256":"dabd82148b3864c86c3d0479690d564862f937c034126178691c8e314d3dc48c"},"schema_version":"1.0","source":{"id":"2102.03254","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.03254","created_at":"2026-07-05T02:13:07Z"},{"alias_kind":"arxiv_version","alias_value":"2102.03254v1","created_at":"2026-07-05T02:13:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.03254","created_at":"2026-07-05T02:13:07Z"},{"alias_kind":"pith_short_12","alias_value":"T7TPUXJ5JGTU","created_at":"2026-07-05T02:13:07Z"},{"alias_kind":"pith_short_16","alias_value":"T7TPUXJ5JGTU76F5","created_at":"2026-07-05T02:13:07Z"},{"alias_kind":"pith_short_8","alias_value":"T7TPUXJ5","created_at":"2026-07-05T02:13:07Z"}],"graph_snapshots":[{"event_id":"sha256:fef2d582ed80ea048622b8f60213eb814564b46d12f5957bf9b2e0945d19d7a3","target":"graph","created_at":"2026-07-05T02:13:07Z","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/2102.03254/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate the interferometric scheme put forward by Tan, Walls and Collett [Phys. Rev. Lett. {\\bf 66}, 256 (1991)] that aims to reveal Bell non-classicality of a single photon. By providing a local hidden variable model that reproduces their results, we decisively refute this claim. In particular, this means that the scheme cannot be used in device-independent protocols.","authors_text":"Antonio Mandarino, Bianka Woloncewicz, Marcin Karczewski, Marcin Markiewicz, Marek \\.Zukowski, Tamoghna Das","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-02-05T15:59:16Z","title":"No-go for device independent protocols with Tan-Walls-Collett `nonlocality of a single photon'"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.03254","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:bc03fdc8a4e339ebc26be5b085e30fbbf6d2559406b7fa0f92298cfd89a1ed04","target":"record","created_at":"2026-07-05T02:13:07Z","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":"5ccec260b63791170b75afa965e18b93758b674d6f1d8c7f571cd33999642f6d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2021-02-05T15:59:16Z","title_canon_sha256":"dabd82148b3864c86c3d0479690d564862f937c034126178691c8e314d3dc48c"},"schema_version":"1.0","source":{"id":"2102.03254","kind":"arxiv","version":1}},"canonical_sha256":"9fe6fa5d3d49a74ff8bdd6b35cdbbaf740f825c864a3c2281977a05e5f7481d7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9fe6fa5d3d49a74ff8bdd6b35cdbbaf740f825c864a3c2281977a05e5f7481d7","first_computed_at":"2026-07-05T02:13:07.551304Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:13:07.551304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5XvlbFIyQwJLbhGdnKqIiLPJk6JX9fNDPo2qey1A9Tk7H9Asb7J0mKvJlDmOW3e9xtOSbvsPhw8VuAyDr2bXBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:13:07.551758Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.03254","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc03fdc8a4e339ebc26be5b085e30fbbf6d2559406b7fa0f92298cfd89a1ed04","sha256:fef2d582ed80ea048622b8f60213eb814564b46d12f5957bf9b2e0945d19d7a3"],"state_sha256":"03beb9fb94801fb42735928c7921d354d22c21ad9a5b9b5c120719aa9a5935ec"}