{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:7RXKANSBU2YHK6PW2U2IO43OS4","short_pith_number":"pith:7RXKANSB","canonical_record":{"source":{"id":"0911.0544","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-11-03T10:47:10Z","cross_cats_sorted":[],"title_canon_sha256":"8b252a5ca41bedd7837fde749f7a62379dc858d15d0227dc64cff00d3ce9e54b","abstract_canon_sha256":"94252d1b0ae03040a2550cf9630298e7d9580203b75cc85b82d5e715192a4378"},"schema_version":"1.0"},"canonical_sha256":"fc6ea03641a6b07579f6d53487736e970a604186a35edc0fab8de40617d7fb4f","source":{"kind":"arxiv","id":"0911.0544","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.0544","created_at":"2026-05-18T02:11:00Z"},{"alias_kind":"arxiv_version","alias_value":"0911.0544v2","created_at":"2026-05-18T02:11:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.0544","created_at":"2026-05-18T02:11:00Z"},{"alias_kind":"pith_short_12","alias_value":"7RXKANSBU2YH","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"7RXKANSBU2YHK6PW","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"7RXKANSB","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:7RXKANSBU2YHK6PW2U2IO43OS4","target":"record","payload":{"canonical_record":{"source":{"id":"0911.0544","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-11-03T10:47:10Z","cross_cats_sorted":[],"title_canon_sha256":"8b252a5ca41bedd7837fde749f7a62379dc858d15d0227dc64cff00d3ce9e54b","abstract_canon_sha256":"94252d1b0ae03040a2550cf9630298e7d9580203b75cc85b82d5e715192a4378"},"schema_version":"1.0"},"canonical_sha256":"fc6ea03641a6b07579f6d53487736e970a604186a35edc0fab8de40617d7fb4f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:11:00.265452Z","signature_b64":"AGzAy6jJCZsiCAJXV5N7wPlkXUjlJ1K/gjvJnvJHpcjPCvb857hn3v7tKPqCBwIUGdvEVU9eGKFh0+p/xXMKBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fc6ea03641a6b07579f6d53487736e970a604186a35edc0fab8de40617d7fb4f","last_reissued_at":"2026-05-18T02:11:00.264756Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:11:00.264756Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0911.0544","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":"2026-05-18T02:11:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eelZ7kj0HNq8pC1Kiu2AuHE+kHJ5a4regXFPxF2w/4u8WM5k9l9JuUkw5R9Ayyx7Nr8kF1rleUg3r2ITtE2LBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T22:19:55.787996Z"},"content_sha256":"9208b6d0006c8533d1440090e259af9d8a5ca0fb352b0dfc315a96cc0d23f9db","schema_version":"1.0","event_id":"sha256:9208b6d0006c8533d1440090e259af9d8a5ca0fb352b0dfc315a96cc0d23f9db"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:7RXKANSBU2YHK6PW2U2IO43OS4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Single-photon spin-orbit entanglement violating a Bell-like inequality","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Lixiang Chen, Weilong She","submitted_at":"2009-11-03T10:47:10Z","abstract_excerpt":"Single photons emerging from q-plates (or Pancharatnam-Berry phase optical element) exhibit entanglement in the degrees of freedom of spin and orbital angular momentum. We put forward an experimental scheme for probing the spin-orbit correlations of single photons. It is found that the Clauser-Horne-Shimony-Holt (CHSH) parameter S for the single-photon spin-orbit entangled state could be up to 2.828, evidently violating the Bell-like inequality and thus invalidating the noncontextual hidden variable (NCHV) theories."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.0544","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":""},"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":"2026-05-18T02:11:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A74lnnWv2mLkYkSKab1Hrsvj58VDly/gLc7PCWM/9/k6Ee+TIT0+1Df4PUi5DbxC0lC5CY++4sWtNzf2llDOCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T22:19:55.788718Z"},"content_sha256":"ee505a383eb77fce87ac1d1c2c9a720286d1ead9727603799b4fd45418e34510","schema_version":"1.0","event_id":"sha256:ee505a383eb77fce87ac1d1c2c9a720286d1ead9727603799b4fd45418e34510"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7RXKANSBU2YHK6PW2U2IO43OS4/bundle.json","state_url":"https://pith.science/pith/7RXKANSBU2YHK6PW2U2IO43OS4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7RXKANSBU2YHK6PW2U2IO43OS4/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":"2026-06-04T22:19:55Z","links":{"resolver":"https://pith.science/pith/7RXKANSBU2YHK6PW2U2IO43OS4","bundle":"https://pith.science/pith/7RXKANSBU2YHK6PW2U2IO43OS4/bundle.json","state":"https://pith.science/pith/7RXKANSBU2YHK6PW2U2IO43OS4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7RXKANSBU2YHK6PW2U2IO43OS4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:7RXKANSBU2YHK6PW2U2IO43OS4","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":"94252d1b0ae03040a2550cf9630298e7d9580203b75cc85b82d5e715192a4378","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-11-03T10:47:10Z","title_canon_sha256":"8b252a5ca41bedd7837fde749f7a62379dc858d15d0227dc64cff00d3ce9e54b"},"schema_version":"1.0","source":{"id":"0911.0544","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.0544","created_at":"2026-05-18T02:11:00Z"},{"alias_kind":"arxiv_version","alias_value":"0911.0544v2","created_at":"2026-05-18T02:11:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.0544","created_at":"2026-05-18T02:11:00Z"},{"alias_kind":"pith_short_12","alias_value":"7RXKANSBU2YH","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"7RXKANSBU2YHK6PW","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"7RXKANSB","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:ee505a383eb77fce87ac1d1c2c9a720286d1ead9727603799b4fd45418e34510","target":"graph","created_at":"2026-05-18T02:11:00Z","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":"Single photons emerging from q-plates (or Pancharatnam-Berry phase optical element) exhibit entanglement in the degrees of freedom of spin and orbital angular momentum. We put forward an experimental scheme for probing the spin-orbit correlations of single photons. It is found that the Clauser-Horne-Shimony-Holt (CHSH) parameter S for the single-photon spin-orbit entangled state could be up to 2.828, evidently violating the Bell-like inequality and thus invalidating the noncontextual hidden variable (NCHV) theories.","authors_text":"Lixiang Chen, Weilong She","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-11-03T10:47:10Z","title":"Single-photon spin-orbit entanglement violating a Bell-like inequality"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.0544","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":"sha256:9208b6d0006c8533d1440090e259af9d8a5ca0fb352b0dfc315a96cc0d23f9db","target":"record","created_at":"2026-05-18T02:11:00Z","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":"94252d1b0ae03040a2550cf9630298e7d9580203b75cc85b82d5e715192a4378","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2009-11-03T10:47:10Z","title_canon_sha256":"8b252a5ca41bedd7837fde749f7a62379dc858d15d0227dc64cff00d3ce9e54b"},"schema_version":"1.0","source":{"id":"0911.0544","kind":"arxiv","version":2}},"canonical_sha256":"fc6ea03641a6b07579f6d53487736e970a604186a35edc0fab8de40617d7fb4f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc6ea03641a6b07579f6d53487736e970a604186a35edc0fab8de40617d7fb4f","first_computed_at":"2026-05-18T02:11:00.264756Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:11:00.264756Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AGzAy6jJCZsiCAJXV5N7wPlkXUjlJ1K/gjvJnvJHpcjPCvb857hn3v7tKPqCBwIUGdvEVU9eGKFh0+p/xXMKBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:11:00.265452Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.0544","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9208b6d0006c8533d1440090e259af9d8a5ca0fb352b0dfc315a96cc0d23f9db","sha256:ee505a383eb77fce87ac1d1c2c9a720286d1ead9727603799b4fd45418e34510"],"state_sha256":"8deb5753b5cd44f1f563e01e0dabf6a16e0f6df5501859e624ed69fa78ce0d51"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0Qa3ZlCU/WwQIMBRJa6aKGV0O8iC5C9Cw3F78CpZOQLNcF/bVc5evKJ0qxsv1DBpblOduXnFoXXCX/aHLVexCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T22:19:55.791660Z","bundle_sha256":"1c09a3727dd7b8593b811d3f4ffb0bb723a24a504ce4560564aa79ffdc1aa3e6"}}