{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:FIE7UQDZU7XIJBBKFVHBK4V6NW","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":"d57f448270dfcae9e450a38cdd1ab6c9389275ae6a528f6a72a82b329857d531","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-01-15T16:22:47Z","title_canon_sha256":"786def3b998a0db4f763fa840eb722548a7356e8004dead573d84645cbf58b38"},"schema_version":"1.0","source":{"id":"2501.08917","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2501.08917","created_at":"2026-07-05T11:58:23Z"},{"alias_kind":"arxiv_version","alias_value":"2501.08917v1","created_at":"2026-07-05T11:58:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2501.08917","created_at":"2026-07-05T11:58:23Z"},{"alias_kind":"pith_short_12","alias_value":"FIE7UQDZU7XI","created_at":"2026-07-05T11:58:23Z"},{"alias_kind":"pith_short_16","alias_value":"FIE7UQDZU7XIJBBK","created_at":"2026-07-05T11:58:23Z"},{"alias_kind":"pith_short_8","alias_value":"FIE7UQDZ","created_at":"2026-07-05T11:58:23Z"}],"graph_snapshots":[{"event_id":"sha256:22543430ef71b396d397f0bd0958a00c4fd34dd02268c48a4d1e0670cb14c5f2","target":"graph","created_at":"2026-07-05T11:58:23Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2501.08917/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we theoretically study spectral and temporal properties of pulsed spontaneous parametric down-conversion (SPDC) generated in lossy waveguides. Our theoretical approach is based on the formalism of Gaussian states and the Langevin equation, which is elaborated for weak parametric down-conversion and photon-number-unresolved click detection. Using the example of frequency-degenerate type-II SPDC generated under pump-idler group-velocity-matching condition, we show how the joint-spectral intensity, mode structure, normalized second-order correlation function, and Hong-Ou-Mandel int","authors_text":"Christine Silberhorn, Denis A. Kopylov, Michael Stefszky, Polina R. Sharapova, Torsten Meier","cross_cats":["physics.optics"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-01-15T16:22:47Z","title":"Spectral and temporal properties of type-II parametric down-conversion: The impact of losses during state generation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2501.08917","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:f011e2ab69f2780517893d1eb127939831c7a9425560ee2ac127d8f38589686c","target":"record","created_at":"2026-07-05T11:58:23Z","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":"d57f448270dfcae9e450a38cdd1ab6c9389275ae6a528f6a72a82b329857d531","cross_cats_sorted":["physics.optics"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2025-01-15T16:22:47Z","title_canon_sha256":"786def3b998a0db4f763fa840eb722548a7356e8004dead573d84645cbf58b38"},"schema_version":"1.0","source":{"id":"2501.08917","kind":"arxiv","version":1}},"canonical_sha256":"2a09fa4079a7ee84842a2d4e1572be6d85b303d096ffd7946b40b2eb3b131b9d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2a09fa4079a7ee84842a2d4e1572be6d85b303d096ffd7946b40b2eb3b131b9d","first_computed_at":"2026-07-05T11:58:23.822931Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:58:23.822931Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Xuwddmd8foDbvVRxx6x17y8TRTtjVvd4f29HEocut2QSDZXILSp+51ZDjnIKwgPRk1DvO5snisH5zJ1Io5SxDw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:58:23.823418Z","signed_message":"canonical_sha256_bytes"},"source_id":"2501.08917","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f011e2ab69f2780517893d1eb127939831c7a9425560ee2ac127d8f38589686c","sha256:22543430ef71b396d397f0bd0958a00c4fd34dd02268c48a4d1e0670cb14c5f2"],"state_sha256":"2ca9a65b65495a5d7ff3a59c9e0e9a728f31514a47c970d6d989fce4d2ab7a91"}