{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:UGZIBG67CFLKVHKWVW5SJA4LB5","short_pith_number":"pith:UGZIBG67","canonical_record":{"source":{"id":"2203.11775","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2022-03-22T14:40:15Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"6eafa7e1625439ced134a7d09f3923a977c2a3bf70dc7cfd8fdaa14e22c388b4","abstract_canon_sha256":"419df9f5cb1182c224326c244cf49fd08c8995d27b43544b1aff13833fc6a8f3"},"schema_version":"1.0"},"canonical_sha256":"a1b2809bdf1156aa9d56adbb24838b0f6bc04b170ed911c3ad16bbbdbf7c7278","source":{"kind":"arxiv","id":"2203.11775","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.11775","created_at":"2026-07-05T05:11:37Z"},{"alias_kind":"arxiv_version","alias_value":"2203.11775v2","created_at":"2026-07-05T05:11:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.11775","created_at":"2026-07-05T05:11:37Z"},{"alias_kind":"pith_short_12","alias_value":"UGZIBG67CFLK","created_at":"2026-07-05T05:11:37Z"},{"alias_kind":"pith_short_16","alias_value":"UGZIBG67CFLKVHKW","created_at":"2026-07-05T05:11:37Z"},{"alias_kind":"pith_short_8","alias_value":"UGZIBG67","created_at":"2026-07-05T05:11:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:UGZIBG67CFLKVHKWVW5SJA4LB5","target":"record","payload":{"canonical_record":{"source":{"id":"2203.11775","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2022-03-22T14:40:15Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"6eafa7e1625439ced134a7d09f3923a977c2a3bf70dc7cfd8fdaa14e22c388b4","abstract_canon_sha256":"419df9f5cb1182c224326c244cf49fd08c8995d27b43544b1aff13833fc6a8f3"},"schema_version":"1.0"},"canonical_sha256":"a1b2809bdf1156aa9d56adbb24838b0f6bc04b170ed911c3ad16bbbdbf7c7278","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:11:37.867811Z","signature_b64":"9Xs1sG9zmdI4sdC/9Gqv7krj2DAK1JgtIqoFnpvZL4eLKNGk09ev8vipzsR5kO7b9lGZPchjwGWEWFumKbhDBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a1b2809bdf1156aa9d56adbb24838b0f6bc04b170ed911c3ad16bbbdbf7c7278","last_reissued_at":"2026-07-05T05:11:37.866879Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:11:37.866879Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2203.11775","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:11:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"12WaUasmKG07nY/twu396xFDOecWkprklANk6mpwtQe1ik84rFNw/1pExCulA6kT7WW2U89GyfGpABDjbKUgAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T12:45:08.342442Z"},"content_sha256":"d0e09a0fedf80aaa705ee03809559dbf49f1664d0e6b81af6ab75c6be295bd0d","schema_version":"1.0","event_id":"sha256:d0e09a0fedf80aaa705ee03809559dbf49f1664d0e6b81af6ab75c6be295bd0d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:UGZIBG67CFLKVHKWVW5SJA4LB5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Monolithically integrated, broadband, high-efficiency silicon nitride-on-silicon waveguide photodetectors in a visible-light integrated photonics platform","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"physics.optics","authors_text":"Ankita Sharma, Hong Chen, Jared Mikkelsen, Jason C. C. Mak, Joyce K. S. Poon, Patrick G.-Q. Lo, Saeed Sharif Azadeh, Wesley D. Sacher, Xianshu Luo, Yiding Lin, Zheng Yong","submitted_at":"2022-03-22T14:40:15Z","abstract_excerpt":"Visible and near-infrared spectrum photonic integrated circuits are quickly becoming a key technology to address the scaling challenges in quantum information and biosensing. Thus far, integrated photonic platforms in this spectral range have lacked integrated photodetectors. Here, we report the first silicon nitride-on-silicon waveguide photodetectors that are monolithically integrated in a visible light photonic platform on silicon. Owing to a leaky-wave silicon nitride-on-silicon design, the devices achieved a high external quantum efficiency of > 60% across a record wavelength span from $\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.11775","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2203.11775/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T05:11:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xHroCx+QOuuiIj8zVOBjq+2pmdhnLMFEllIQsC6bEYeDwbXuu3BcZe8D09CCYKh4gyom9cwao1hTKZuf4ShxBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T12:45:08.342951Z"},"content_sha256":"d36fc11ced79504299161d1195ddddd3b2088fa8d481f11a4691c56fbc35c220","schema_version":"1.0","event_id":"sha256:d36fc11ced79504299161d1195ddddd3b2088fa8d481f11a4691c56fbc35c220"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UGZIBG67CFLKVHKWVW5SJA4LB5/bundle.json","state_url":"https://pith.science/pith/UGZIBG67CFLKVHKWVW5SJA4LB5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UGZIBG67CFLKVHKWVW5SJA4LB5/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":"2026-08-04T12:45:08Z","links":{"resolver":"https://pith.science/pith/UGZIBG67CFLKVHKWVW5SJA4LB5","bundle":"https://pith.science/pith/UGZIBG67CFLKVHKWVW5SJA4LB5/bundle.json","state":"https://pith.science/pith/UGZIBG67CFLKVHKWVW5SJA4LB5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UGZIBG67CFLKVHKWVW5SJA4LB5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:UGZIBG67CFLKVHKWVW5SJA4LB5","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":"419df9f5cb1182c224326c244cf49fd08c8995d27b43544b1aff13833fc6a8f3","cross_cats_sorted":["physics.app-ph"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2022-03-22T14:40:15Z","title_canon_sha256":"6eafa7e1625439ced134a7d09f3923a977c2a3bf70dc7cfd8fdaa14e22c388b4"},"schema_version":"1.0","source":{"id":"2203.11775","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.11775","created_at":"2026-07-05T05:11:37Z"},{"alias_kind":"arxiv_version","alias_value":"2203.11775v2","created_at":"2026-07-05T05:11:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.11775","created_at":"2026-07-05T05:11:37Z"},{"alias_kind":"pith_short_12","alias_value":"UGZIBG67CFLK","created_at":"2026-07-05T05:11:37Z"},{"alias_kind":"pith_short_16","alias_value":"UGZIBG67CFLKVHKW","created_at":"2026-07-05T05:11:37Z"},{"alias_kind":"pith_short_8","alias_value":"UGZIBG67","created_at":"2026-07-05T05:11:37Z"}],"graph_snapshots":[{"event_id":"sha256:d36fc11ced79504299161d1195ddddd3b2088fa8d481f11a4691c56fbc35c220","target":"graph","created_at":"2026-07-05T05:11:37Z","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/2203.11775/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Visible and near-infrared spectrum photonic integrated circuits are quickly becoming a key technology to address the scaling challenges in quantum information and biosensing. Thus far, integrated photonic platforms in this spectral range have lacked integrated photodetectors. Here, we report the first silicon nitride-on-silicon waveguide photodetectors that are monolithically integrated in a visible light photonic platform on silicon. Owing to a leaky-wave silicon nitride-on-silicon design, the devices achieved a high external quantum efficiency of > 60% across a record wavelength span from $\\","authors_text":"Ankita Sharma, Hong Chen, Jared Mikkelsen, Jason C. C. Mak, Joyce K. S. Poon, Patrick G.-Q. Lo, Saeed Sharif Azadeh, Wesley D. Sacher, Xianshu Luo, Yiding Lin, Zheng Yong","cross_cats":["physics.app-ph"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2022-03-22T14:40:15Z","title":"Monolithically integrated, broadband, high-efficiency silicon nitride-on-silicon waveguide photodetectors in a visible-light integrated photonics platform"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.11775","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:d0e09a0fedf80aaa705ee03809559dbf49f1664d0e6b81af6ab75c6be295bd0d","target":"record","created_at":"2026-07-05T05:11:37Z","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":"419df9f5cb1182c224326c244cf49fd08c8995d27b43544b1aff13833fc6a8f3","cross_cats_sorted":["physics.app-ph"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"physics.optics","submitted_at":"2022-03-22T14:40:15Z","title_canon_sha256":"6eafa7e1625439ced134a7d09f3923a977c2a3bf70dc7cfd8fdaa14e22c388b4"},"schema_version":"1.0","source":{"id":"2203.11775","kind":"arxiv","version":2}},"canonical_sha256":"a1b2809bdf1156aa9d56adbb24838b0f6bc04b170ed911c3ad16bbbdbf7c7278","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1b2809bdf1156aa9d56adbb24838b0f6bc04b170ed911c3ad16bbbdbf7c7278","first_computed_at":"2026-07-05T05:11:37.866879Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:11:37.866879Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9Xs1sG9zmdI4sdC/9Gqv7krj2DAK1JgtIqoFnpvZL4eLKNGk09ev8vipzsR5kO7b9lGZPchjwGWEWFumKbhDBg==","signature_status":"signed_v1","signed_at":"2026-07-05T05:11:37.867811Z","signed_message":"canonical_sha256_bytes"},"source_id":"2203.11775","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d0e09a0fedf80aaa705ee03809559dbf49f1664d0e6b81af6ab75c6be295bd0d","sha256:d36fc11ced79504299161d1195ddddd3b2088fa8d481f11a4691c56fbc35c220"],"state_sha256":"33a3ee0b709ac74322ba1601a3daa9f07baee0cd52d1af409ba7761ccc949d3e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CcKNWxpws93do8qSXAUzt3EtTbrMvzxo6VGsf0OYe42EcUK/hm5KiCgI6xzzDxeEdrwwxfaBuPKDYmxQmme6Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T12:45:08.347176Z","bundle_sha256":"a3e0970ba49cf02efb6929f5e5bbe096b79f6fd5fc283a44e621a9446f2296a1"}}