{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:ORCKWU43T2QVQKYJCB4YMLIUNK","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":"5c8b7fdc99a784aff5f8a84282699a293efb523152c29f7103ef752d2d28136d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-08-16T23:18:40Z","title_canon_sha256":"3492c8f2f082cb4c143c6036edddd3ce09176e1ef3de1f8acf4e9a9745f037d7"},"schema_version":"1.0","source":{"id":"1008.2792","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.2792","created_at":"2026-05-18T04:37:10Z"},{"alias_kind":"arxiv_version","alias_value":"1008.2792v1","created_at":"2026-05-18T04:37:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.2792","created_at":"2026-05-18T04:37:10Z"},{"alias_kind":"pith_short_12","alias_value":"ORCKWU43T2QV","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_16","alias_value":"ORCKWU43T2QVQKYJ","created_at":"2026-05-18T12:26:12Z"},{"alias_kind":"pith_short_8","alias_value":"ORCKWU43","created_at":"2026-05-18T12:26:12Z"}],"graph_snapshots":[{"event_id":"sha256:437ba54e278cf7363f37782efb07f2ea249fb3af0d77af69154cb146c0bada0c","target":"graph","created_at":"2026-05-18T04:37:10Z","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 efforts to produce single photons via heralding have relied on creating spectrally factorable two-photon states in order to achieve both high purity and high production rate. Through a careful multimode analysis, we find, however, that spectral factorability is not necessary. Utilizing single-mode detection, a similar or better performance can be achieved with non-factorable states. This conclusion rides on the fact that even when using a broadband filter, a single-mode measurement can still be realized, as long as the coherence time of the triggering photons exceeds the measurement win","authors_text":"Joseph B. Altepeter, Prem Kumar, Yu-ping Huang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-08-16T23:18:40Z","title":"Heralding Single Photons Without Spectral Factorability"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.2792","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":"sha256:04613059045905120b5ea8cd55cc414595a352ddc680ef0708358c3d697d323c","target":"record","created_at":"2026-05-18T04:37:10Z","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":"5c8b7fdc99a784aff5f8a84282699a293efb523152c29f7103ef752d2d28136d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-08-16T23:18:40Z","title_canon_sha256":"3492c8f2f082cb4c143c6036edddd3ce09176e1ef3de1f8acf4e9a9745f037d7"},"schema_version":"1.0","source":{"id":"1008.2792","kind":"arxiv","version":1}},"canonical_sha256":"7444ab539b9ea1582b091079862d146aaa947ff4204cd2bb942648c32735433d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7444ab539b9ea1582b091079862d146aaa947ff4204cd2bb942648c32735433d","first_computed_at":"2026-05-18T04:37:10.065617Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:37:10.065617Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"I1Arwl3FR6qmR+pMn37HZ5LEZa69h7InJy0gSZqrTqrs6t9CbJjQNTv9UAtqXhZgUdDyY+rbyzS4I0zxnmZeCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:37:10.066137Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.2792","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:04613059045905120b5ea8cd55cc414595a352ddc680ef0708358c3d697d323c","sha256:437ba54e278cf7363f37782efb07f2ea249fb3af0d77af69154cb146c0bada0c"],"state_sha256":"1e8d2fb3e70fc1cfd28f8045ef1a9ba24fbc1624b72861bc2a41477ee1a2614a"}