{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:7FNNPAG66ZPGPAV5KW3NL6ALOA","short_pith_number":"pith:7FNNPAG6","canonical_record":{"source":{"id":"1602.07915","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-02-25T12:56:58Z","cross_cats_sorted":[],"title_canon_sha256":"634470338d71f2ee76cf2074bb9b45a7206e533f3a05db63f7022ea1cfb9a7ab","abstract_canon_sha256":"94bda6755128191b3d1258b3e4d0c6fcf807e4be37318f539fe09f03824defbe"},"schema_version":"1.0"},"canonical_sha256":"f95ad780def65e6782bd55b6d5f80b7027d8aff28eb442b66860d3844292e68c","source":{"kind":"arxiv","id":"1602.07915","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.07915","created_at":"2026-05-18T01:11:44Z"},{"alias_kind":"arxiv_version","alias_value":"1602.07915v1","created_at":"2026-05-18T01:11:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.07915","created_at":"2026-05-18T01:11:44Z"},{"alias_kind":"pith_short_12","alias_value":"7FNNPAG66ZPG","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7FNNPAG66ZPGPAV5","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7FNNPAG6","created_at":"2026-05-18T12:30:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:7FNNPAG66ZPGPAV5KW3NL6ALOA","target":"record","payload":{"canonical_record":{"source":{"id":"1602.07915","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-02-25T12:56:58Z","cross_cats_sorted":[],"title_canon_sha256":"634470338d71f2ee76cf2074bb9b45a7206e533f3a05db63f7022ea1cfb9a7ab","abstract_canon_sha256":"94bda6755128191b3d1258b3e4d0c6fcf807e4be37318f539fe09f03824defbe"},"schema_version":"1.0"},"canonical_sha256":"f95ad780def65e6782bd55b6d5f80b7027d8aff28eb442b66860d3844292e68c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:11:44.924488Z","signature_b64":"u4PfZ//fE9p3d3+zNE6Y18DirKNdpSQqPznCiTiTGAIuCBF4FpJ8BGQY9RmxTHEEo0w/5npPF9KzsoVtjp7SDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f95ad780def65e6782bd55b6d5f80b7027d8aff28eb442b66860d3844292e68c","last_reissued_at":"2026-05-18T01:11:44.923802Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:11:44.923802Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1602.07915","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:11:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KQS97fHJHDDgztZLnCib8+hqPqNnRzWTfKo9+FMsq16VtsYkb/cgAlMNwR24l9gFhXgOMkCf+KWMjFKydsauCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:28:35.138254Z"},"content_sha256":"932f27339b29748c2cfa1c7a8cc810c3175371ce7bd7a5bbf9ae3e8799f1da61","schema_version":"1.0","event_id":"sha256:932f27339b29748c2cfa1c7a8cc810c3175371ce7bd7a5bbf9ae3e8799f1da61"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:7FNNPAG66ZPGPAV5KW3NL6ALOA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Correlated photon pair generation in low-loss double-stripe silicon nitride waveguides","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Benjamin J. Eggleton, Chunle Xiong, Xiang Zhang, Yanbing Zhang","submitted_at":"2016-02-25T12:56:58Z","abstract_excerpt":"We demonstrate correlated photon pair generation via spontaneous four-wave mixing in a low-loss double-stripe silicon nitride waveguide with a coincidence-to-accidental ratio over 10. The coincidence-to-accidental ratio is limited by spontaneous Raman scattering, which can be mitigated by cooling in the future. This demonstration suggests that this waveguide structure is a potential platform to develop integrated quantum photonic chips for quantum information processing."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.07915","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:11:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2jpl1dD1Fkvb5b8G2CN+xo6dbOyOGfUZI651U0zzp0vSkz9S4R6erOp44JrR3WFxcgD1DMEVHoHL40wdzuYCDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T16:28:35.138814Z"},"content_sha256":"ea1fff61e8adfc7c0f67ebf9955d6d10193976765d8b8c6b03160c506cb1a56b","schema_version":"1.0","event_id":"sha256:ea1fff61e8adfc7c0f67ebf9955d6d10193976765d8b8c6b03160c506cb1a56b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7FNNPAG66ZPGPAV5KW3NL6ALOA/bundle.json","state_url":"https://pith.science/pith/7FNNPAG66ZPGPAV5KW3NL6ALOA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7FNNPAG66ZPGPAV5KW3NL6ALOA/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-31T16:28:35Z","links":{"resolver":"https://pith.science/pith/7FNNPAG66ZPGPAV5KW3NL6ALOA","bundle":"https://pith.science/pith/7FNNPAG66ZPGPAV5KW3NL6ALOA/bundle.json","state":"https://pith.science/pith/7FNNPAG66ZPGPAV5KW3NL6ALOA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7FNNPAG66ZPGPAV5KW3NL6ALOA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:7FNNPAG66ZPGPAV5KW3NL6ALOA","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":"94bda6755128191b3d1258b3e4d0c6fcf807e4be37318f539fe09f03824defbe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-02-25T12:56:58Z","title_canon_sha256":"634470338d71f2ee76cf2074bb9b45a7206e533f3a05db63f7022ea1cfb9a7ab"},"schema_version":"1.0","source":{"id":"1602.07915","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1602.07915","created_at":"2026-05-18T01:11:44Z"},{"alias_kind":"arxiv_version","alias_value":"1602.07915v1","created_at":"2026-05-18T01:11:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.07915","created_at":"2026-05-18T01:11:44Z"},{"alias_kind":"pith_short_12","alias_value":"7FNNPAG66ZPG","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7FNNPAG66ZPGPAV5","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7FNNPAG6","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:ea1fff61e8adfc7c0f67ebf9955d6d10193976765d8b8c6b03160c506cb1a56b","target":"graph","created_at":"2026-05-18T01:11:44Z","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 demonstrate correlated photon pair generation via spontaneous four-wave mixing in a low-loss double-stripe silicon nitride waveguide with a coincidence-to-accidental ratio over 10. The coincidence-to-accidental ratio is limited by spontaneous Raman scattering, which can be mitigated by cooling in the future. This demonstration suggests that this waveguide structure is a potential platform to develop integrated quantum photonic chips for quantum information processing.","authors_text":"Benjamin J. Eggleton, Chunle Xiong, Xiang Zhang, Yanbing Zhang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-02-25T12:56:58Z","title":"Correlated photon pair generation in low-loss double-stripe silicon nitride waveguides"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.07915","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":"sha256:932f27339b29748c2cfa1c7a8cc810c3175371ce7bd7a5bbf9ae3e8799f1da61","target":"record","created_at":"2026-05-18T01:11:44Z","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":"94bda6755128191b3d1258b3e4d0c6fcf807e4be37318f539fe09f03824defbe","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-02-25T12:56:58Z","title_canon_sha256":"634470338d71f2ee76cf2074bb9b45a7206e533f3a05db63f7022ea1cfb9a7ab"},"schema_version":"1.0","source":{"id":"1602.07915","kind":"arxiv","version":1}},"canonical_sha256":"f95ad780def65e6782bd55b6d5f80b7027d8aff28eb442b66860d3844292e68c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f95ad780def65e6782bd55b6d5f80b7027d8aff28eb442b66860d3844292e68c","first_computed_at":"2026-05-18T01:11:44.923802Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:11:44.923802Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"u4PfZ//fE9p3d3+zNE6Y18DirKNdpSQqPznCiTiTGAIuCBF4FpJ8BGQY9RmxTHEEo0w/5npPF9KzsoVtjp7SDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:11:44.924488Z","signed_message":"canonical_sha256_bytes"},"source_id":"1602.07915","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:932f27339b29748c2cfa1c7a8cc810c3175371ce7bd7a5bbf9ae3e8799f1da61","sha256:ea1fff61e8adfc7c0f67ebf9955d6d10193976765d8b8c6b03160c506cb1a56b"],"state_sha256":"c6d2ebeb714e217cb14341fcca2974e7778575f2bd696fa6a1375c8c61193659"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sAQQuHWyGyF2oNSMMHjHUNQN3x9DNTegzJxYwt6RRv3ne57PIAim3fJM0xsG+4GbNZUIuyxE0wtZhjxO9Fl6DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T16:28:35.141824Z","bundle_sha256":"7703a6c42f5a1a7577cc49fb4fa76bbd914ea2b782cbcfbd30168a7a5734fc41"}}