{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:34ND4ABKYCEFFP4GFZGWOUE72R","short_pith_number":"pith:34ND4ABK","canonical_record":{"source":{"id":"1403.4660","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-03-19T01:33:10Z","cross_cats_sorted":[],"title_canon_sha256":"560f547f38eba55c16653bbc6b798e2d32a5e9ea2dbb5ba565a203016c83d8c4","abstract_canon_sha256":"8f8f2043d756758d4509a4f370c8fca6322a0a96853cccc3374ab237a7d6fe0d"},"schema_version":"1.0"},"canonical_sha256":"df1a3e002ac08852bf862e4d67509fd44e75804e7db6c9f442bbdbfd5a7a426a","source":{"kind":"arxiv","id":"1403.4660","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.4660","created_at":"2026-05-18T02:41:18Z"},{"alias_kind":"arxiv_version","alias_value":"1403.4660v2","created_at":"2026-05-18T02:41:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.4660","created_at":"2026-05-18T02:41:18Z"},{"alias_kind":"pith_short_12","alias_value":"34ND4ABKYCEF","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"34ND4ABKYCEFFP4G","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"34ND4ABK","created_at":"2026-05-18T12:28:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:34ND4ABKYCEFFP4GFZGWOUE72R","target":"record","payload":{"canonical_record":{"source":{"id":"1403.4660","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-03-19T01:33:10Z","cross_cats_sorted":[],"title_canon_sha256":"560f547f38eba55c16653bbc6b798e2d32a5e9ea2dbb5ba565a203016c83d8c4","abstract_canon_sha256":"8f8f2043d756758d4509a4f370c8fca6322a0a96853cccc3374ab237a7d6fe0d"},"schema_version":"1.0"},"canonical_sha256":"df1a3e002ac08852bf862e4d67509fd44e75804e7db6c9f442bbdbfd5a7a426a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:41:18.642936Z","signature_b64":"flTe2Fjb6keRedG5gQRCOxui8ui7+1fpNsxXaZxpc3yFUI2Ad2zo1XJh6tTEqUA1TMiidop6D22PspO1tIc7Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"df1a3e002ac08852bf862e4d67509fd44e75804e7db6c9f442bbdbfd5a7a426a","last_reissued_at":"2026-05-18T02:41:18.642519Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:41:18.642519Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1403.4660","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":"2026-05-18T02:41:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uZ+2VRvBA8qQflCOFlRKXEgv4zHf6BYiYaVULZNvLXnR/81CpQZoS5dLIb3cimvbS2HFmyveayG7jd75TOLaCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T11:39:58.591115Z"},"content_sha256":"2873af8fb58b4b819d8c5d13af5cab0838a941cbded44ce414a8b1fa2a57f7eb","schema_version":"1.0","event_id":"sha256:2873af8fb58b4b819d8c5d13af5cab0838a941cbded44ce414a8b1fa2a57f7eb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:34ND4ABKYCEFFP4GFZGWOUE72R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Entanglement distillation for quantum communication network with atomic-ensemble memories","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Fu-Guo Deng, Guo-Jian Yang, Tao Li","submitted_at":"2014-03-19T01:33:10Z","abstract_excerpt":"Atomic ensembles are effective memory nodes for quantum communication network due to the long coherence time and the collective enhancement effect for the nonlinear interaction between an ensemble and a photon. Here we investigate the possibility of achieving the entanglement distillation for nonlocal atomic ensembles by the input-output process of a single photon as a result of cavity quantum electrodynamics. We give an optimal entanglement concentration protocol (ECP) for two-atomic-ensemble systems in a partially entangled pure state with known parameters and an efficient ECP for the system"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.4660","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":"2026-05-18T02:41:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VaS7oTOhxkstvIpe3XYsdtpxCPCR9LdZDgYkjhAT1Hp8k/wsdNiDH9SYiU/TdTEdJuGzSj2/Lvu/bEhW2s94AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T11:39:58.591764Z"},"content_sha256":"3e6b12c95aaf1c5a2b1d767895e17307eb0e0a4564d735f2fabfbe79a66369b2","schema_version":"1.0","event_id":"sha256:3e6b12c95aaf1c5a2b1d767895e17307eb0e0a4564d735f2fabfbe79a66369b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/34ND4ABKYCEFFP4GFZGWOUE72R/bundle.json","state_url":"https://pith.science/pith/34ND4ABKYCEFFP4GFZGWOUE72R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/34ND4ABKYCEFFP4GFZGWOUE72R/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":"2026-05-25T11:39:58Z","links":{"resolver":"https://pith.science/pith/34ND4ABKYCEFFP4GFZGWOUE72R","bundle":"https://pith.science/pith/34ND4ABKYCEFFP4GFZGWOUE72R/bundle.json","state":"https://pith.science/pith/34ND4ABKYCEFFP4GFZGWOUE72R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/34ND4ABKYCEFFP4GFZGWOUE72R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:34ND4ABKYCEFFP4GFZGWOUE72R","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":"8f8f2043d756758d4509a4f370c8fca6322a0a96853cccc3374ab237a7d6fe0d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-03-19T01:33:10Z","title_canon_sha256":"560f547f38eba55c16653bbc6b798e2d32a5e9ea2dbb5ba565a203016c83d8c4"},"schema_version":"1.0","source":{"id":"1403.4660","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.4660","created_at":"2026-05-18T02:41:18Z"},{"alias_kind":"arxiv_version","alias_value":"1403.4660v2","created_at":"2026-05-18T02:41:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.4660","created_at":"2026-05-18T02:41:18Z"},{"alias_kind":"pith_short_12","alias_value":"34ND4ABKYCEF","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_16","alias_value":"34ND4ABKYCEFFP4G","created_at":"2026-05-18T12:28:11Z"},{"alias_kind":"pith_short_8","alias_value":"34ND4ABK","created_at":"2026-05-18T12:28:11Z"}],"graph_snapshots":[{"event_id":"sha256:3e6b12c95aaf1c5a2b1d767895e17307eb0e0a4564d735f2fabfbe79a66369b2","target":"graph","created_at":"2026-05-18T02:41:18Z","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":"Atomic ensembles are effective memory nodes for quantum communication network due to the long coherence time and the collective enhancement effect for the nonlinear interaction between an ensemble and a photon. Here we investigate the possibility of achieving the entanglement distillation for nonlocal atomic ensembles by the input-output process of a single photon as a result of cavity quantum electrodynamics. We give an optimal entanglement concentration protocol (ECP) for two-atomic-ensemble systems in a partially entangled pure state with known parameters and an efficient ECP for the system","authors_text":"Fu-Guo Deng, Guo-Jian Yang, Tao Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-03-19T01:33:10Z","title":"Entanglement distillation for quantum communication network with atomic-ensemble memories"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.4660","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":"sha256:2873af8fb58b4b819d8c5d13af5cab0838a941cbded44ce414a8b1fa2a57f7eb","target":"record","created_at":"2026-05-18T02:41:18Z","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":"8f8f2043d756758d4509a4f370c8fca6322a0a96853cccc3374ab237a7d6fe0d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2014-03-19T01:33:10Z","title_canon_sha256":"560f547f38eba55c16653bbc6b798e2d32a5e9ea2dbb5ba565a203016c83d8c4"},"schema_version":"1.0","source":{"id":"1403.4660","kind":"arxiv","version":2}},"canonical_sha256":"df1a3e002ac08852bf862e4d67509fd44e75804e7db6c9f442bbdbfd5a7a426a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"df1a3e002ac08852bf862e4d67509fd44e75804e7db6c9f442bbdbfd5a7a426a","first_computed_at":"2026-05-18T02:41:18.642519Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:41:18.642519Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"flTe2Fjb6keRedG5gQRCOxui8ui7+1fpNsxXaZxpc3yFUI2Ad2zo1XJh6tTEqUA1TMiidop6D22PspO1tIc7Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:41:18.642936Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.4660","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2873af8fb58b4b819d8c5d13af5cab0838a941cbded44ce414a8b1fa2a57f7eb","sha256:3e6b12c95aaf1c5a2b1d767895e17307eb0e0a4564d735f2fabfbe79a66369b2"],"state_sha256":"39628e122c45e469ce7501f3d005fdb61689c4e63da879f5ddcc2743b29203cb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EeiOXIY3B8H2039Mt9V0COBc4t83kKMYh2UUn5+4ValZOsZnDqkk+X6R1TjrptzeePI4kvNfB7RRc6fLZCo/Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T11:39:58.595357Z","bundle_sha256":"270b0f35311283d95f5673e14af9dede2c1e00382e44b00eb793f4ec41866826"}}