{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:EOGXOU2BVGB6IKFHYCJHVL76UE","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":"3b50fff1fa569acfdb0279f2681c986927570f6a56b5c92aee255449e3e401d9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-07-25T23:03:05Z","title_canon_sha256":"2e80f61af8f68b1bc042be21803fb9a2a7e670c17f30c4a848560c683372a4d8"},"schema_version":"1.0","source":{"id":"1007.4358","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.4358","created_at":"2026-05-18T04:05:04Z"},{"alias_kind":"arxiv_version","alias_value":"1007.4358v2","created_at":"2026-05-18T04:05:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.4358","created_at":"2026-05-18T04:05:04Z"},{"alias_kind":"pith_short_12","alias_value":"EOGXOU2BVGB6","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_16","alias_value":"EOGXOU2BVGB6IKFH","created_at":"2026-05-18T12:26:06Z"},{"alias_kind":"pith_short_8","alias_value":"EOGXOU2B","created_at":"2026-05-18T12:26:06Z"}],"graph_snapshots":[{"event_id":"sha256:343b5876cf6c7608c82e2e6f14935a19113277fa94ba835532f0fb205d2cb17a","target":"graph","created_at":"2026-05-18T04:05:04Z","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 the realization of a fiber coupled polarization entangled photon-pair source at 1310 nm based on a birefringent titanium in-diffused waveguide integrated on periodically poled lithium niobate. By taking advantage of a dedicated and high-performance setup, we characterized the quantum properties of the pairs by measuring two-photon interference in both Hong-Ou-Mandel and standard Bell inequality configurations. We obtained, for the two sets of measurements, interference net visibilities reaching nearly 100%, which represent important and competitive results compared to similar wavegui","authors_text":"A. Issautier, A. Martin, D. B. Ostrowsky, H. Herrmann, O. Alibart, S. Tanzilli, W. Sohler","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-07-25T23:03:05Z","title":"Polarization entangled photon-pair source based on a type-II PPLN waveguide emitting at a telecom wavelength"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.4358","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:b357a66276b39029b9f1300d4e46d27418ba0bece22c81dc1e5e511e99ffcea4","target":"record","created_at":"2026-05-18T04:05:04Z","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":"3b50fff1fa569acfdb0279f2681c986927570f6a56b5c92aee255449e3e401d9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2010-07-25T23:03:05Z","title_canon_sha256":"2e80f61af8f68b1bc042be21803fb9a2a7e670c17f30c4a848560c683372a4d8"},"schema_version":"1.0","source":{"id":"1007.4358","kind":"arxiv","version":2}},"canonical_sha256":"238d775341a983e428a7c0927aaffea12e1e37efdc851b702b8276c868ed1c4f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"238d775341a983e428a7c0927aaffea12e1e37efdc851b702b8276c868ed1c4f","first_computed_at":"2026-05-18T04:05:04.158291Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:05:04.158291Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"S2lM+NKAVYR/yPnmB8LVFWjo4Ew++xKzBoj+nSeYbKzKjMbp++fZRZCZJwoQBjzasiuRKKhb+eT28xHNiQyfAw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:05:04.158896Z","signed_message":"canonical_sha256_bytes"},"source_id":"1007.4358","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b357a66276b39029b9f1300d4e46d27418ba0bece22c81dc1e5e511e99ffcea4","sha256:343b5876cf6c7608c82e2e6f14935a19113277fa94ba835532f0fb205d2cb17a"],"state_sha256":"828d013f96ea1f6910e431dcc8d61a63410ec8d168cdeed3f7de2c1b85168545"}