{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:6ZPRCW5KZVDIVFTDZWKTICBS3R","short_pith_number":"pith:6ZPRCW5K","canonical_record":{"source":{"id":"2404.19584","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-04-30T14:22:12Z","cross_cats_sorted":[],"title_canon_sha256":"8509273ddde34631fb218f67059049f3945ddf46a7614ddf0884ee9b6b7d0394","abstract_canon_sha256":"9b9517f790aaaad72f7751895c2f5d572f78907b953231474bd0e12ff83e40fd"},"schema_version":"1.0"},"canonical_sha256":"f65f115baacd468a9663cd95340832dc650b6f6ced4092c0351e871591743e1b","source":{"kind":"arxiv","id":"2404.19584","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.19584","created_at":"2026-07-05T08:13:45Z"},{"alias_kind":"arxiv_version","alias_value":"2404.19584v1","created_at":"2026-07-05T08:13:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.19584","created_at":"2026-07-05T08:13:45Z"},{"alias_kind":"pith_short_12","alias_value":"6ZPRCW5KZVDI","created_at":"2026-07-05T08:13:45Z"},{"alias_kind":"pith_short_16","alias_value":"6ZPRCW5KZVDIVFTD","created_at":"2026-07-05T08:13:45Z"},{"alias_kind":"pith_short_8","alias_value":"6ZPRCW5K","created_at":"2026-07-05T08:13:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:6ZPRCW5KZVDIVFTDZWKTICBS3R","target":"record","payload":{"canonical_record":{"source":{"id":"2404.19584","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-04-30T14:22:12Z","cross_cats_sorted":[],"title_canon_sha256":"8509273ddde34631fb218f67059049f3945ddf46a7614ddf0884ee9b6b7d0394","abstract_canon_sha256":"9b9517f790aaaad72f7751895c2f5d572f78907b953231474bd0e12ff83e40fd"},"schema_version":"1.0"},"canonical_sha256":"f65f115baacd468a9663cd95340832dc650b6f6ced4092c0351e871591743e1b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:13:45.611527Z","signature_b64":"GNdIRZ2XVpZGCH1g7YKxF9ndEO5WsITJ3iMK6m8cnDdlpVuuL7DXmgzhbhJXkvO8ao7lVZ7hdb1M2DyXrMT1Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f65f115baacd468a9663cd95340832dc650b6f6ced4092c0351e871591743e1b","last_reissued_at":"2026-07-05T08:13:45.611095Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:13:45.611095Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.19584","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":"2026-07-05T08:13:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6Qc8IvL1tEnwLo0Pl0a8jMeCcbqdwWawo1IPMaplstFLd7bKLPvqfxH8UVGxGzKmSxJVXjHaNeVzlo5IGY6+CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:32:19.549598Z"},"content_sha256":"e2694de94f4e7d0e5bd06367467ba3fa42086758e0f0173adac3ed98a7b0f00f","schema_version":"1.0","event_id":"sha256:e2694de94f4e7d0e5bd06367467ba3fa42086758e0f0173adac3ed98a7b0f00f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:6ZPRCW5KZVDIVFTDZWKTICBS3R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Broadband microwave-rate dark pulse microcombs in dissipation-engineered LiNbO$_3$ microresonators","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Binbin Nie, Chen Yang, Du Qian, Fang Bo, Guanyu Zhang, Guowei Lv, Kaixuan Zhu, Qi-Fan Yang, Qihuang Gong, Rui Ma, Xiaomin Lv, Xing Jin, Yanwu Liu, Ze Wang, Zhenyu Chen","submitted_at":"2024-04-30T14:22:12Z","abstract_excerpt":"Kerr microcombs generated in optical microresonators provide broadband light sources bridging optical and microwave signals. Their translation to thin-film lithium niobate unlocks second-order nonlinear optical interfaces such as electro-optic modulation and frequency doubling for completing comb functionalities. However, the strong Raman response of LiNbO$_3$ has complicated the formation of Kerr microcombs. Until now, dark pulse microcombs, requiring a double balance between Kerr nonlinearity and normal group velocity dispersion as well as gain and loss, have remained elusive in LiNbO$_3$ mi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.19584","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2404.19584/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":"2026-07-05T08:13:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K4TVSSXlB+cBRDZZsuSntm1UoX1SafF13pRI62EBQ4FMHPHEWzf9iym9dTghG1tk79QuD6UrLBjqFDQhrQ4MDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:32:19.552299Z"},"content_sha256":"c931a9c32ad43a8ddfb322c442733b2059fa49b9c59dfcfa8e92f628af318499","schema_version":"1.0","event_id":"sha256:c931a9c32ad43a8ddfb322c442733b2059fa49b9c59dfcfa8e92f628af318499"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6ZPRCW5KZVDIVFTDZWKTICBS3R/bundle.json","state_url":"https://pith.science/pith/6ZPRCW5KZVDIVFTDZWKTICBS3R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6ZPRCW5KZVDIVFTDZWKTICBS3R/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":"2026-08-04T08:32:19Z","links":{"resolver":"https://pith.science/pith/6ZPRCW5KZVDIVFTDZWKTICBS3R","bundle":"https://pith.science/pith/6ZPRCW5KZVDIVFTDZWKTICBS3R/bundle.json","state":"https://pith.science/pith/6ZPRCW5KZVDIVFTDZWKTICBS3R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6ZPRCW5KZVDIVFTDZWKTICBS3R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:6ZPRCW5KZVDIVFTDZWKTICBS3R","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":"9b9517f790aaaad72f7751895c2f5d572f78907b953231474bd0e12ff83e40fd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-04-30T14:22:12Z","title_canon_sha256":"8509273ddde34631fb218f67059049f3945ddf46a7614ddf0884ee9b6b7d0394"},"schema_version":"1.0","source":{"id":"2404.19584","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.19584","created_at":"2026-07-05T08:13:45Z"},{"alias_kind":"arxiv_version","alias_value":"2404.19584v1","created_at":"2026-07-05T08:13:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.19584","created_at":"2026-07-05T08:13:45Z"},{"alias_kind":"pith_short_12","alias_value":"6ZPRCW5KZVDI","created_at":"2026-07-05T08:13:45Z"},{"alias_kind":"pith_short_16","alias_value":"6ZPRCW5KZVDIVFTD","created_at":"2026-07-05T08:13:45Z"},{"alias_kind":"pith_short_8","alias_value":"6ZPRCW5K","created_at":"2026-07-05T08:13:45Z"}],"graph_snapshots":[{"event_id":"sha256:c931a9c32ad43a8ddfb322c442733b2059fa49b9c59dfcfa8e92f628af318499","target":"graph","created_at":"2026-07-05T08:13:45Z","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/2404.19584/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Kerr microcombs generated in optical microresonators provide broadband light sources bridging optical and microwave signals. Their translation to thin-film lithium niobate unlocks second-order nonlinear optical interfaces such as electro-optic modulation and frequency doubling for completing comb functionalities. However, the strong Raman response of LiNbO$_3$ has complicated the formation of Kerr microcombs. Until now, dark pulse microcombs, requiring a double balance between Kerr nonlinearity and normal group velocity dispersion as well as gain and loss, have remained elusive in LiNbO$_3$ mi","authors_text":"Binbin Nie, Chen Yang, Du Qian, Fang Bo, Guanyu Zhang, Guowei Lv, Kaixuan Zhu, Qi-Fan Yang, Qihuang Gong, Rui Ma, Xiaomin Lv, Xing Jin, Yanwu Liu, Ze Wang, Zhenyu Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-04-30T14:22:12Z","title":"Broadband microwave-rate dark pulse microcombs in dissipation-engineered LiNbO$_3$ microresonators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.19584","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:e2694de94f4e7d0e5bd06367467ba3fa42086758e0f0173adac3ed98a7b0f00f","target":"record","created_at":"2026-07-05T08:13:45Z","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":"9b9517f790aaaad72f7751895c2f5d572f78907b953231474bd0e12ff83e40fd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-04-30T14:22:12Z","title_canon_sha256":"8509273ddde34631fb218f67059049f3945ddf46a7614ddf0884ee9b6b7d0394"},"schema_version":"1.0","source":{"id":"2404.19584","kind":"arxiv","version":1}},"canonical_sha256":"f65f115baacd468a9663cd95340832dc650b6f6ced4092c0351e871591743e1b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f65f115baacd468a9663cd95340832dc650b6f6ced4092c0351e871591743e1b","first_computed_at":"2026-07-05T08:13:45.611095Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:13:45.611095Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GNdIRZ2XVpZGCH1g7YKxF9ndEO5WsITJ3iMK6m8cnDdlpVuuL7DXmgzhbhJXkvO8ao7lVZ7hdb1M2DyXrMT1Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:13:45.611527Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.19584","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e2694de94f4e7d0e5bd06367467ba3fa42086758e0f0173adac3ed98a7b0f00f","sha256:c931a9c32ad43a8ddfb322c442733b2059fa49b9c59dfcfa8e92f628af318499"],"state_sha256":"2f72fc7690f12b9ea0a73cede34f887015b672f82f6b69ad15874dacd41ee239"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AFRHLbIqJVhLq7qmLfPLaiV0VWakF7TGZGPjjUD5qgaMFpigMDAs3t1EBlvOrAmsc4Ofs3zwjf9hx0Ie6t7oBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T08:32:19.589502Z","bundle_sha256":"8cd0be6e6eb1c5483ca044275673818d19c41dc2046e11b43404f25dd57c48d2"}}