{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:WW4TR4UUA62WIPWE5LC23WGPQP","short_pith_number":"pith:WW4TR4UU","canonical_record":{"source":{"id":"quant-ph/0102079","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2001-02-16T08:52:46Z","cross_cats_sorted":[],"title_canon_sha256":"4e55e4c65b32e9af2e4736c440269e93c1135b15024dae6a7191e9c6bacd27ff","abstract_canon_sha256":"ab6fd7f52aeac4d1659a6f111c881e684cbc47ee8539b250694baad7d7e74751"},"schema_version":"1.0"},"canonical_sha256":"b5b938f29407b5643ec4eac5add8cf83dabcdbe2f60eff87dac654a4dde1e4a5","source":{"kind":"arxiv","id":"quant-ph/0102079","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0102079","created_at":"2026-05-18T01:38:02Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0102079v1","created_at":"2026-05-18T01:38:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0102079","created_at":"2026-05-18T01:38:02Z"},{"alias_kind":"pith_short_12","alias_value":"WW4TR4UUA62W","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"WW4TR4UUA62WIPWE","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"WW4TR4UU","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:WW4TR4UUA62WIPWE5LC23WGPQP","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/0102079","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2001-02-16T08:52:46Z","cross_cats_sorted":[],"title_canon_sha256":"4e55e4c65b32e9af2e4736c440269e93c1135b15024dae6a7191e9c6bacd27ff","abstract_canon_sha256":"ab6fd7f52aeac4d1659a6f111c881e684cbc47ee8539b250694baad7d7e74751"},"schema_version":"1.0"},"canonical_sha256":"b5b938f29407b5643ec4eac5add8cf83dabcdbe2f60eff87dac654a4dde1e4a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:02.831083Z","signature_b64":"0lybxLgOJaLmWICsTl+k7bkP/SlK+4MBl3zVSZ4xGzI32ZDlXiH9lNlypLVWMS6/222RXb7FImxWwoJ+wDQvBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b5b938f29407b5643ec4eac5add8cf83dabcdbe2f60eff87dac654a4dde1e4a5","last_reissued_at":"2026-05-18T01:38:02.830509Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:02.830509Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/0102079","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:38:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zKw22QfNkB7ZTWyjw1wxF9dLlJ5V3PzFog37Y+Nx4o6nOQLSZ2oR6oaYp/BlBLXgwvJGE4hgRmKhUTC3aKO6DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T02:27:55.235447Z"},"content_sha256":"b0171375018e94eebcad0fb7e5e6d5d4f22d1fdb910a64b0037f91f4eb8c1e39","schema_version":"1.0","event_id":"sha256:b0171375018e94eebcad0fb7e5e6d5d4f22d1fdb910a64b0037f91f4eb8c1e39"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:WW4TR4UUA62WIPWE5LC23WGPQP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Verifying Atom Entanglement Schemes by Testing Bell's Inequality","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Almut Beige, Ben Tregenna, Dimitris G. Angelakis, Peter L. Knight, William J. Munro","submitted_at":"2001-02-16T08:52:46Z","abstract_excerpt":"Recent experiments to test Bell's inequality using entangled photons and ions aimed at tests of basic quantum mechanical principles. Interesting results have been obtained and many loopholes could be closed. In this paper we want to point out that tests of Bell's inequality also play an important role in verifying atom entanglement schemes. We describe as an example a scheme to prepare arbitrary entangled states of N two-level atoms using a leaky optical cavity and a scheme to entangle atoms inside a photonic crystal. During the state preparation no photons are emitted and observing a violatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0102079","kind":"arxiv","version":1},"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":"2026-05-18T01:38:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2ISZK4t/q4tcMGCywDF2Y9r+zYOGvfFdkxN0OCZqnL0l808R3IIarEidDSaB8Qcfh6akCwAO7h7ft3MC8w3YBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T02:27:55.236130Z"},"content_sha256":"9d27bc1ed73f779cd06d63a5793131e45eb28698179fa45129b1039b8001af07","schema_version":"1.0","event_id":"sha256:9d27bc1ed73f779cd06d63a5793131e45eb28698179fa45129b1039b8001af07"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WW4TR4UUA62WIPWE5LC23WGPQP/bundle.json","state_url":"https://pith.science/pith/WW4TR4UUA62WIPWE5LC23WGPQP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WW4TR4UUA62WIPWE5LC23WGPQP/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":"2026-06-08T02:27:55Z","links":{"resolver":"https://pith.science/pith/WW4TR4UUA62WIPWE5LC23WGPQP","bundle":"https://pith.science/pith/WW4TR4UUA62WIPWE5LC23WGPQP/bundle.json","state":"https://pith.science/pith/WW4TR4UUA62WIPWE5LC23WGPQP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WW4TR4UUA62WIPWE5LC23WGPQP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:WW4TR4UUA62WIPWE5LC23WGPQP","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":"ab6fd7f52aeac4d1659a6f111c881e684cbc47ee8539b250694baad7d7e74751","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2001-02-16T08:52:46Z","title_canon_sha256":"4e55e4c65b32e9af2e4736c440269e93c1135b15024dae6a7191e9c6bacd27ff"},"schema_version":"1.0","source":{"id":"quant-ph/0102079","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0102079","created_at":"2026-05-18T01:38:02Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0102079v1","created_at":"2026-05-18T01:38:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0102079","created_at":"2026-05-18T01:38:02Z"},{"alias_kind":"pith_short_12","alias_value":"WW4TR4UUA62W","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"WW4TR4UUA62WIPWE","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"WW4TR4UU","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:9d27bc1ed73f779cd06d63a5793131e45eb28698179fa45129b1039b8001af07","target":"graph","created_at":"2026-05-18T01:38:02Z","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":"Recent experiments to test Bell's inequality using entangled photons and ions aimed at tests of basic quantum mechanical principles. Interesting results have been obtained and many loopholes could be closed. In this paper we want to point out that tests of Bell's inequality also play an important role in verifying atom entanglement schemes. We describe as an example a scheme to prepare arbitrary entangled states of N two-level atoms using a leaky optical cavity and a scheme to entangle atoms inside a photonic crystal. During the state preparation no photons are emitted and observing a violatio","authors_text":"Almut Beige, Ben Tregenna, Dimitris G. Angelakis, Peter L. Knight, William J. Munro","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2001-02-16T08:52:46Z","title":"Verifying Atom Entanglement Schemes by Testing Bell's Inequality"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0102079","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:b0171375018e94eebcad0fb7e5e6d5d4f22d1fdb910a64b0037f91f4eb8c1e39","target":"record","created_at":"2026-05-18T01:38:02Z","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":"ab6fd7f52aeac4d1659a6f111c881e684cbc47ee8539b250694baad7d7e74751","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2001-02-16T08:52:46Z","title_canon_sha256":"4e55e4c65b32e9af2e4736c440269e93c1135b15024dae6a7191e9c6bacd27ff"},"schema_version":"1.0","source":{"id":"quant-ph/0102079","kind":"arxiv","version":1}},"canonical_sha256":"b5b938f29407b5643ec4eac5add8cf83dabcdbe2f60eff87dac654a4dde1e4a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b5b938f29407b5643ec4eac5add8cf83dabcdbe2f60eff87dac654a4dde1e4a5","first_computed_at":"2026-05-18T01:38:02.830509Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:02.830509Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0lybxLgOJaLmWICsTl+k7bkP/SlK+4MBl3zVSZ4xGzI32ZDlXiH9lNlypLVWMS6/222RXb7FImxWwoJ+wDQvBw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:02.831083Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0102079","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b0171375018e94eebcad0fb7e5e6d5d4f22d1fdb910a64b0037f91f4eb8c1e39","sha256:9d27bc1ed73f779cd06d63a5793131e45eb28698179fa45129b1039b8001af07"],"state_sha256":"308ae3314be443e211dc8213fe14dd6a1bb2d9fadfc8888de818bc228d0f045e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ma1LOrTexgMqTGySDnTUwhmVHEdT0q5a8gbMwydTK0sPU3mSJEd+DApKfGKECO/lHRnDNctXyjmrROqUjV6WBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T02:27:55.240083Z","bundle_sha256":"6b696ceffa827012a1983b0995d5fee35cecab63c2c3c22066f027ec03c25be4"}}