{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2004:5XXY4R54YHZFQET5Y5WHKRTHSE","short_pith_number":"pith:5XXY4R54","canonical_record":{"source":{"id":"quant-ph/0410203","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2004-10-26T02:01:23Z","cross_cats_sorted":[],"title_canon_sha256":"bf64b699925fa829b1c4454b984acd5c64495a500e25ad72f29282033fd23068","abstract_canon_sha256":"f859d420bafa6db2c3e1e63f8430f4ec8b54a842400200c59349b1661196b35e"},"schema_version":"1.0"},"canonical_sha256":"edef8e47bcc1f258127dc76c754667913ee87077202f4f7e443743d5e82f0566","source":{"kind":"arxiv","id":"quant-ph/0410203","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0410203","created_at":"2026-07-04T15:28:14Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0410203v2","created_at":"2026-07-04T15:28:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0410203","created_at":"2026-07-04T15:28:14Z"},{"alias_kind":"pith_short_12","alias_value":"5XXY4R54YHZF","created_at":"2026-07-04T15:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"5XXY4R54YHZFQET5","created_at":"2026-07-04T15:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"5XXY4R54","created_at":"2026-07-04T15:28:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2004:5XXY4R54YHZFQET5Y5WHKRTHSE","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/0410203","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2004-10-26T02:01:23Z","cross_cats_sorted":[],"title_canon_sha256":"bf64b699925fa829b1c4454b984acd5c64495a500e25ad72f29282033fd23068","abstract_canon_sha256":"f859d420bafa6db2c3e1e63f8430f4ec8b54a842400200c59349b1661196b35e"},"schema_version":"1.0"},"canonical_sha256":"edef8e47bcc1f258127dc76c754667913ee87077202f4f7e443743d5e82f0566","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:28:14.469372Z","signature_b64":"sdB0TV/7BgDv4mcnDObTP+MaS+7TEKVlZe5V9pBEzlzHCfhk/pDDioAyF2PknIg392Ybh/irNz/7RBMJkeHBCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"edef8e47bcc1f258127dc76c754667913ee87077202f4f7e443743d5e82f0566","last_reissued_at":"2026-07-04T15:28:14.468981Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:28:14.468981Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/0410203","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:28:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ddWp/vMOS+x7tDIzufkTTgSG8sNSf150ZmctkqJ0Ti0AI8OBvgfrILctaO/2lLBanBcxsDGk45nQ+rFG2xC9AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T22:21:58.663406Z"},"content_sha256":"0af94eead6d5a8bb4f7da7f4f0a399c76174bf95050dd89a941073161842656b","schema_version":"1.0","event_id":"sha256:0af94eead6d5a8bb4f7da7f4f0a399c76174bf95050dd89a941073161842656b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2004:5XXY4R54YHZFQET5Y5WHKRTHSE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Demonstrating quantum nonlocality without entanglement","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"A. G. White, G. J. Pryde, J. L. O'Brien, Stephen D. Bartlett","submitted_at":"2004-10-26T02:01:23Z","abstract_excerpt":"We experimentally demonstrate the superior discrimination of separated, unentangled two-qubit correlated states using nonlocal measurements, when compared with measurements based on local operations and classical communications. When predicted theoretically, this phenomenon was dubbed \"quantum nonlocality without entanglement.\" We characterize the performance of the nonlocal, or joint, measurement with a payoff function, for which we measure 0.72(2), compared with the maximum locally achievable value of 2/3 and the overall optimal value of 0.75."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0410203","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/quant-ph/0410203/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T15:28:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"90OxwnvEHXxoDSZ7mBLGAYXEVxzgzpjozZXiiuSWqjJBtceeIkPobFEfBsYhXtoINt/re77HronyN8sfE+7eDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T22:21:58.663792Z"},"content_sha256":"65dbe735ed693c20243e77b5dd18a675a943143be6c4db92b124688f5995fa0f","schema_version":"1.0","event_id":"sha256:65dbe735ed693c20243e77b5dd18a675a943143be6c4db92b124688f5995fa0f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5XXY4R54YHZFQET5Y5WHKRTHSE/bundle.json","state_url":"https://pith.science/pith/5XXY4R54YHZFQET5Y5WHKRTHSE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5XXY4R54YHZFQET5Y5WHKRTHSE/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-07-04T22:21:58Z","links":{"resolver":"https://pith.science/pith/5XXY4R54YHZFQET5Y5WHKRTHSE","bundle":"https://pith.science/pith/5XXY4R54YHZFQET5Y5WHKRTHSE/bundle.json","state":"https://pith.science/pith/5XXY4R54YHZFQET5Y5WHKRTHSE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5XXY4R54YHZFQET5Y5WHKRTHSE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2004:5XXY4R54YHZFQET5Y5WHKRTHSE","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":"f859d420bafa6db2c3e1e63f8430f4ec8b54a842400200c59349b1661196b35e","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2004-10-26T02:01:23Z","title_canon_sha256":"bf64b699925fa829b1c4454b984acd5c64495a500e25ad72f29282033fd23068"},"schema_version":"1.0","source":{"id":"quant-ph/0410203","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0410203","created_at":"2026-07-04T15:28:14Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0410203v2","created_at":"2026-07-04T15:28:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0410203","created_at":"2026-07-04T15:28:14Z"},{"alias_kind":"pith_short_12","alias_value":"5XXY4R54YHZF","created_at":"2026-07-04T15:28:14Z"},{"alias_kind":"pith_short_16","alias_value":"5XXY4R54YHZFQET5","created_at":"2026-07-04T15:28:14Z"},{"alias_kind":"pith_short_8","alias_value":"5XXY4R54","created_at":"2026-07-04T15:28:14Z"}],"graph_snapshots":[{"event_id":"sha256:65dbe735ed693c20243e77b5dd18a675a943143be6c4db92b124688f5995fa0f","target":"graph","created_at":"2026-07-04T15:28:14Z","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/quant-ph/0410203/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We experimentally demonstrate the superior discrimination of separated, unentangled two-qubit correlated states using nonlocal measurements, when compared with measurements based on local operations and classical communications. When predicted theoretically, this phenomenon was dubbed \"quantum nonlocality without entanglement.\" We characterize the performance of the nonlocal, or joint, measurement with a payoff function, for which we measure 0.72(2), compared with the maximum locally achievable value of 2/3 and the overall optimal value of 0.75.","authors_text":"A. G. White, G. J. Pryde, J. L. O'Brien, Stephen D. Bartlett","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2004-10-26T02:01:23Z","title":"Demonstrating quantum nonlocality without entanglement"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0410203","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":"sha256:0af94eead6d5a8bb4f7da7f4f0a399c76174bf95050dd89a941073161842656b","target":"record","created_at":"2026-07-04T15:28:14Z","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":"f859d420bafa6db2c3e1e63f8430f4ec8b54a842400200c59349b1661196b35e","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2004-10-26T02:01:23Z","title_canon_sha256":"bf64b699925fa829b1c4454b984acd5c64495a500e25ad72f29282033fd23068"},"schema_version":"1.0","source":{"id":"quant-ph/0410203","kind":"arxiv","version":2}},"canonical_sha256":"edef8e47bcc1f258127dc76c754667913ee87077202f4f7e443743d5e82f0566","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"edef8e47bcc1f258127dc76c754667913ee87077202f4f7e443743d5e82f0566","first_computed_at":"2026-07-04T15:28:14.468981Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:28:14.468981Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sdB0TV/7BgDv4mcnDObTP+MaS+7TEKVlZe5V9pBEzlzHCfhk/pDDioAyF2PknIg392Ybh/irNz/7RBMJkeHBCA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:28:14.469372Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0410203","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0af94eead6d5a8bb4f7da7f4f0a399c76174bf95050dd89a941073161842656b","sha256:65dbe735ed693c20243e77b5dd18a675a943143be6c4db92b124688f5995fa0f"],"state_sha256":"9c91074f6679183ba8ae9fb0df786af8cf72a89c993cd180a29ae83c054af85f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FKw5i2YMmFdKiz2Wx0xUMuFAZn9fdSEtHQpRpH6Qt8TD7XUB8JujConKp1IAeIShV7ypotckS/1/w8Me/eJ/Cw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T22:21:58.665918Z","bundle_sha256":"a0540c19afec3c48a438b151fbd6e02213ca2ce72dc3fbcb53f263a2559a42a1"}}