{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:R3JRXOLGYPCL6LCZXQSPXMODUZ","short_pith_number":"pith:R3JRXOLG","schema_version":"1.0","canonical_sha256":"8ed31bb966c3c4bf2c59bc24fbb1c3a66f61ac34f003439d032334bd62d1e543","source":{"kind":"arxiv","id":"1810.04823","version":1},"attestation_state":"computed","paper":{"title":"12-photon entanglement and scalable scattershot boson sampling with optimal entangled-photon pairs from parametric down-conversion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Chao-Yang Lu, Han-Sen Zhong, Hao Li, Jian-Wei Pan, Li-Chao Peng, Li Li, L.-X. You, L. Zhang, Nai-Le Liu, Wei Li, W.-J. Zhang, Xiao Jiang, Xi-Lin Wang, Xing Ding, Yi Hu, Yuan Li, Yu-Ao Chen, Yu-Ming He, Zu-En Su, Z. Wang","submitted_at":"2018-10-11T02:35:35Z","abstract_excerpt":"Entangled photon sources with simultaneously near-unity heralding efficiency and indistinguishability are the fundamental elements for scalable photonic quantum technologies. We design and realize a degenerate entangled-photon source from an ultrafast pulsed laser pumped spontaneous parametric down-conversion (SPDC), which show simultaneously ~97% heralding efficiency and ~96% indistinguishability between independent single photons. Such a high-efficiency and frequency-uncorrelated SPDC source allows generation of the first 12-photon genuine entanglement with a state fidelity of 0.572(24). We "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1810.04823","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2018-10-11T02:35:35Z","cross_cats_sorted":["physics.optics"],"title_canon_sha256":"ef07317bf29b513a28f273cc6d5b21ff8c9167910d68acd5e9f013d4991d6e0c","abstract_canon_sha256":"80c31f6c3fd44f9a8c397d756a2127918f49e03f5b6ece013c9621efe7d3f2dd"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:47:15.906251Z","signature_b64":"QZGAG0OoXKcWinW5cwb/t6pmNsY94t/QImq5RucmdWjQLoTcsWDXcMgjlGUskEmqW6wq5sWltIMcG8kcp7kuDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8ed31bb966c3c4bf2c59bc24fbb1c3a66f61ac34f003439d032334bd62d1e543","last_reissued_at":"2026-05-17T23:47:15.905809Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:47:15.905809Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"12-photon entanglement and scalable scattershot boson sampling with optimal entangled-photon pairs from parametric down-conversion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.optics"],"primary_cat":"quant-ph","authors_text":"Chao-Yang Lu, Han-Sen Zhong, Hao Li, Jian-Wei Pan, Li-Chao Peng, Li Li, L.-X. You, L. Zhang, Nai-Le Liu, Wei Li, W.-J. Zhang, Xiao Jiang, Xi-Lin Wang, Xing Ding, Yi Hu, Yuan Li, Yu-Ao Chen, Yu-Ming He, Zu-En Su, Z. Wang","submitted_at":"2018-10-11T02:35:35Z","abstract_excerpt":"Entangled photon sources with simultaneously near-unity heralding efficiency and indistinguishability are the fundamental elements for scalable photonic quantum technologies. We design and realize a degenerate entangled-photon source from an ultrafast pulsed laser pumped spontaneous parametric down-conversion (SPDC), which show simultaneously ~97% heralding efficiency and ~96% indistinguishability between independent single photons. Such a high-efficiency and frequency-uncorrelated SPDC source allows generation of the first 12-photon genuine entanglement with a state fidelity of 0.572(24). We "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.04823","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1810.04823","created_at":"2026-05-17T23:47:15.905873+00:00"},{"alias_kind":"arxiv_version","alias_value":"1810.04823v1","created_at":"2026-05-17T23:47:15.905873+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.04823","created_at":"2026-05-17T23:47:15.905873+00:00"},{"alias_kind":"pith_short_12","alias_value":"R3JRXOLGYPCL","created_at":"2026-05-18T12:32:50.500415+00:00"},{"alias_kind":"pith_short_16","alias_value":"R3JRXOLGYPCL6LCZ","created_at":"2026-05-18T12:32:50.500415+00:00"},{"alias_kind":"pith_short_8","alias_value":"R3JRXOLG","created_at":"2026-05-18T12:32:50.500415+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/R3JRXOLGYPCL6LCZXQSPXMODUZ","json":"https://pith.science/pith/R3JRXOLGYPCL6LCZXQSPXMODUZ.json","graph_json":"https://pith.science/api/pith-number/R3JRXOLGYPCL6LCZXQSPXMODUZ/graph.json","events_json":"https://pith.science/api/pith-number/R3JRXOLGYPCL6LCZXQSPXMODUZ/events.json","paper":"https://pith.science/paper/R3JRXOLG"},"agent_actions":{"view_html":"https://pith.science/pith/R3JRXOLGYPCL6LCZXQSPXMODUZ","download_json":"https://pith.science/pith/R3JRXOLGYPCL6LCZXQSPXMODUZ.json","view_paper":"https://pith.science/paper/R3JRXOLG","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1810.04823&json=true","fetch_graph":"https://pith.science/api/pith-number/R3JRXOLGYPCL6LCZXQSPXMODUZ/graph.json","fetch_events":"https://pith.science/api/pith-number/R3JRXOLGYPCL6LCZXQSPXMODUZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/R3JRXOLGYPCL6LCZXQSPXMODUZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/R3JRXOLGYPCL6LCZXQSPXMODUZ/action/storage_attestation","attest_author":"https://pith.science/pith/R3JRXOLGYPCL6LCZXQSPXMODUZ/action/author_attestation","sign_citation":"https://pith.science/pith/R3JRXOLGYPCL6LCZXQSPXMODUZ/action/citation_signature","submit_replication":"https://pith.science/pith/R3JRXOLGYPCL6LCZXQSPXMODUZ/action/replication_record"}},"created_at":"2026-05-17T23:47:15.905873+00:00","updated_at":"2026-05-17T23:47:15.905873+00:00"}