{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:QE6EWJMFSF72VF75AURJ6WWTLK","short_pith_number":"pith:QE6EWJMF","canonical_record":{"source":{"id":"1210.7694","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-10-29T15:43:10Z","cross_cats_sorted":[],"title_canon_sha256":"d117a6d352e035f774053a0d62148ccbfee82c0dd551e908b0f1526b35257386","abstract_canon_sha256":"613835d1cb9581bb075f0e9316ea47b9b2442c181c60a3c134613f5f9ec4a307"},"schema_version":"1.0"},"canonical_sha256":"813c4b2585917faa97fd05229f5ad35a992fd3b3d33f221178de32558d70fc4c","source":{"kind":"arxiv","id":"1210.7694","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.7694","created_at":"2026-05-18T03:42:09Z"},{"alias_kind":"arxiv_version","alias_value":"1210.7694v1","created_at":"2026-05-18T03:42:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.7694","created_at":"2026-05-18T03:42:09Z"},{"alias_kind":"pith_short_12","alias_value":"QE6EWJMFSF72","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"QE6EWJMFSF72VF75","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"QE6EWJMF","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:QE6EWJMFSF72VF75AURJ6WWTLK","target":"record","payload":{"canonical_record":{"source":{"id":"1210.7694","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-10-29T15:43:10Z","cross_cats_sorted":[],"title_canon_sha256":"d117a6d352e035f774053a0d62148ccbfee82c0dd551e908b0f1526b35257386","abstract_canon_sha256":"613835d1cb9581bb075f0e9316ea47b9b2442c181c60a3c134613f5f9ec4a307"},"schema_version":"1.0"},"canonical_sha256":"813c4b2585917faa97fd05229f5ad35a992fd3b3d33f221178de32558d70fc4c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:42:09.059093Z","signature_b64":"wt3NtQfYjUaQRmKFYMlC5LX4i1s4zLqGY2xvUpDlixdzrDGUsO54Vq6LR7byTwwoas87uScC2nILAgULJ8H+DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"813c4b2585917faa97fd05229f5ad35a992fd3b3d33f221178de32558d70fc4c","last_reissued_at":"2026-05-18T03:42:09.058148Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:42:09.058148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.7694","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":"2026-05-18T03:42:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cy/AvoaZvEOFYe8oeKDgoPxkvoeOiYIRqi9RBx7Fwp0s2MsVkgvIclt8WqFV0HJTgPf+OxFFFqZAXrfydKsoDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T02:59:26.746094Z"},"content_sha256":"8bb01be6333a3e140fb4350d8bf91eb8394c05d72c6c0e0682ccb62fccc6ac00","schema_version":"1.0","event_id":"sha256:8bb01be6333a3e140fb4350d8bf91eb8394c05d72c6c0e0682ccb62fccc6ac00"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:QE6EWJMFSF72VF75AURJ6WWTLK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bipartite entanglement of multipartite coherent states using quantum network of beam splitters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"E. B. Choubabi, M. Daoud","submitted_at":"2012-10-29T15:43:10Z","abstract_excerpt":"We investigate the generation of multipartite entangled SU(k+1) coherent states using a quantum network involving a sequence of k beam splitters. We particularly investigate the entanglement in multipartite SU(2) coherent states (k = 1). We employ the concurrence as measure of the degree of bipartite entanglement."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.7694","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":"2026-05-18T03:42:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SR2JGro7ECCBj1FuxuOD53Pt58c56COpLaq71NJp8tdlhPn4TLGebkmOG7ay9gO/S6Y5rAXQVVId4VpIwujqAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T02:59:26.746468Z"},"content_sha256":"fd54d5cfc4e8b0749d68683cfe3e7b3482ab1b8f91508e7dd1ef652ade66452a","schema_version":"1.0","event_id":"sha256:fd54d5cfc4e8b0749d68683cfe3e7b3482ab1b8f91508e7dd1ef652ade66452a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QE6EWJMFSF72VF75AURJ6WWTLK/bundle.json","state_url":"https://pith.science/pith/QE6EWJMFSF72VF75AURJ6WWTLK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QE6EWJMFSF72VF75AURJ6WWTLK/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":"2026-05-28T02:59:26Z","links":{"resolver":"https://pith.science/pith/QE6EWJMFSF72VF75AURJ6WWTLK","bundle":"https://pith.science/pith/QE6EWJMFSF72VF75AURJ6WWTLK/bundle.json","state":"https://pith.science/pith/QE6EWJMFSF72VF75AURJ6WWTLK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QE6EWJMFSF72VF75AURJ6WWTLK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:QE6EWJMFSF72VF75AURJ6WWTLK","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":"613835d1cb9581bb075f0e9316ea47b9b2442c181c60a3c134613f5f9ec4a307","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-10-29T15:43:10Z","title_canon_sha256":"d117a6d352e035f774053a0d62148ccbfee82c0dd551e908b0f1526b35257386"},"schema_version":"1.0","source":{"id":"1210.7694","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.7694","created_at":"2026-05-18T03:42:09Z"},{"alias_kind":"arxiv_version","alias_value":"1210.7694v1","created_at":"2026-05-18T03:42:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.7694","created_at":"2026-05-18T03:42:09Z"},{"alias_kind":"pith_short_12","alias_value":"QE6EWJMFSF72","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"QE6EWJMFSF72VF75","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"QE6EWJMF","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:fd54d5cfc4e8b0749d68683cfe3e7b3482ab1b8f91508e7dd1ef652ade66452a","target":"graph","created_at":"2026-05-18T03:42:09Z","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":"We investigate the generation of multipartite entangled SU(k+1) coherent states using a quantum network involving a sequence of k beam splitters. We particularly investigate the entanglement in multipartite SU(2) coherent states (k = 1). We employ the concurrence as measure of the degree of bipartite entanglement.","authors_text":"E. B. Choubabi, M. Daoud","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-10-29T15:43:10Z","title":"Bipartite entanglement of multipartite coherent states using quantum network of beam splitters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.7694","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":"sha256:8bb01be6333a3e140fb4350d8bf91eb8394c05d72c6c0e0682ccb62fccc6ac00","target":"record","created_at":"2026-05-18T03:42:09Z","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":"613835d1cb9581bb075f0e9316ea47b9b2442c181c60a3c134613f5f9ec4a307","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-10-29T15:43:10Z","title_canon_sha256":"d117a6d352e035f774053a0d62148ccbfee82c0dd551e908b0f1526b35257386"},"schema_version":"1.0","source":{"id":"1210.7694","kind":"arxiv","version":1}},"canonical_sha256":"813c4b2585917faa97fd05229f5ad35a992fd3b3d33f221178de32558d70fc4c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"813c4b2585917faa97fd05229f5ad35a992fd3b3d33f221178de32558d70fc4c","first_computed_at":"2026-05-18T03:42:09.058148Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:42:09.058148Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wt3NtQfYjUaQRmKFYMlC5LX4i1s4zLqGY2xvUpDlixdzrDGUsO54Vq6LR7byTwwoas87uScC2nILAgULJ8H+DA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:42:09.059093Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.7694","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8bb01be6333a3e140fb4350d8bf91eb8394c05d72c6c0e0682ccb62fccc6ac00","sha256:fd54d5cfc4e8b0749d68683cfe3e7b3482ab1b8f91508e7dd1ef652ade66452a"],"state_sha256":"ec58b28b6dec29e29c5b593586f3e3dfc1a1e6c0ce811b4b5f85ee7d40177107"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3tDll1WrMkpPdTBZS1DN8Bq++/gQ9d7xg6UgAD4DITHYftGtORq/hez6DLwb901IqXKn958QeAJyhDT9mm7EBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T02:59:26.748420Z","bundle_sha256":"09ba095189e0c0f3f5d0e87a89b76f081f98db36ecba925ef1bd9c8fbd3f7318"}}