{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:3FB36QSVWWQRDZP7X5QXBCVR6A","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":"7c0f03d62e31fb1c85e01d4e5bd073a8cbd71100e5b62e4e7f7ef842d2272e67","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"quant-ph","submitted_at":"2013-06-07T15:57:52Z","title_canon_sha256":"febf707c732b33ca975e542c2909c017291a351f926f4c2c73ebbe63a71663aa"},"schema_version":"1.0","source":{"id":"1306.1756","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1306.1756","created_at":"2026-05-18T03:21:32Z"},{"alias_kind":"arxiv_version","alias_value":"1306.1756v1","created_at":"2026-05-18T03:21:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1306.1756","created_at":"2026-05-18T03:21:32Z"},{"alias_kind":"pith_short_12","alias_value":"3FB36QSVWWQR","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"3FB36QSVWWQRDZP7","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"3FB36QSV","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:5876439c52ca339e61d1a57c4496d13eacd8c18ff943f50307c2021b0f76d993","target":"graph","created_at":"2026-05-18T03:21:32Z","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 report on an integrated non-degenerate narrowband photon pair source produced at 890 nm and 1320nm via type II parametric down-conversion in a periodically poled waveguide with high-reflective dielectric mirrors deposited on the waveguide end faces. The conversion spectrum consists of three clusters and only 3 to 4 longitudinal modes with about 150 MHz bandwidth in each cluster. The high conversion efficiency in the waveguide, together with the spectral clustering in the double resonator, leads to a high brightness of $3\\times10^3~$pairs/(s$\\cdot$mW$\\cdot$MHz). The compact and rugged monoli","authors_text":"Christine Silberhorn, Harald Herrmann, Hubertus Suche, Kai-Hong Luo, Raimund Ricken, Stephan Krapick, Viktor Quiring, Wolfgang Sohler","cross_cats":["physics.optics"],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"quant-ph","submitted_at":"2013-06-07T15:57:52Z","title":"Two-color narrowband photon pair source with high brightness based on clustering in a monolithic waveguide resonator"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.1756","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":"sha256:0796075b4d8b063e15caa5631602fbf84675a2c9d0b4e250cb2ed7d068de2c23","target":"record","created_at":"2026-05-18T03:21:32Z","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":"7c0f03d62e31fb1c85e01d4e5bd073a8cbd71100e5b62e4e7f7ef842d2272e67","cross_cats_sorted":["physics.optics"],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"quant-ph","submitted_at":"2013-06-07T15:57:52Z","title_canon_sha256":"febf707c732b33ca975e542c2909c017291a351f926f4c2c73ebbe63a71663aa"},"schema_version":"1.0","source":{"id":"1306.1756","kind":"arxiv","version":1}},"canonical_sha256":"d943bf4255b5a111e5ffbf61708ab1f005abba09dacbb367bebac4bcfb783fcc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d943bf4255b5a111e5ffbf61708ab1f005abba09dacbb367bebac4bcfb783fcc","first_computed_at":"2026-05-18T03:21:32.496636Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:21:32.496636Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YVvdRgKK5ugoIZAQeqoAWwFSjAvykRNHY9RuygIqCESauJ0Yr5LeyidmD/zEVnoy8o8gx7gbztISZ4v9Zk5EDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:21:32.497531Z","signed_message":"canonical_sha256_bytes"},"source_id":"1306.1756","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0796075b4d8b063e15caa5631602fbf84675a2c9d0b4e250cb2ed7d068de2c23","sha256:5876439c52ca339e61d1a57c4496d13eacd8c18ff943f50307c2021b0f76d993"],"state_sha256":"f867af521c7dc9725aa14b3c66d6919dae42290265d3eddac6e1c8fd491a7a8a"}