{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:54P7HO5H3MVNILTS74R43BZUJP","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":"01c0bb4408694d3210b8fcd7bc4a7e2bc89718c8c41123483ff4e551a5770718","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-04-13T19:29:45Z","title_canon_sha256":"86403dc60b0e1b9ccef28e994203cd759b0dc81afe916befce878f0b9e810ccf"},"schema_version":"1.0","source":{"id":"1704.04264","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1704.04264","created_at":"2026-05-18T00:10:04Z"},{"alias_kind":"arxiv_version","alias_value":"1704.04264v1","created_at":"2026-05-18T00:10:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1704.04264","created_at":"2026-05-18T00:10:04Z"},{"alias_kind":"pith_short_12","alias_value":"54P7HO5H3MVN","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"54P7HO5H3MVNILTS","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"54P7HO5H","created_at":"2026-05-18T12:31:00Z"}],"graph_snapshots":[{"event_id":"sha256:840b5b829d127fef9b5c875478636dccbc982fb5d8b93e1f990f7c3959ba1531","target":"graph","created_at":"2026-05-18T00:10:04Z","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":"Optical frequency combs enable state-of-the-art applications including frequency metrology, optical clocks, astronomical measurements, and sensing. Recent demonstrations of microresonator-based Kerr frequency combs or microcombs pave the way to scalable and stable comb sources on a photonic chip. Generating microcombs in the visible wavelength range, however, has been limited by large material dispersion and optical loss. Here we demonstrate a scheme for efficiently generating visible microcomb in a high Q aluminum nitride microring resonator. Enhanced Pockels effect strongly couples infrared ","authors_text":"Alexander Bruch, Chang-Ling Zou, Hojoong Jung, Hong X. Tang, Liang Jiang, Xiang Guo, Zheng Gong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-04-13T19:29:45Z","title":"Efficient visible frequency comb generation via Cherenkov radiation from a Kerr microcomb"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.04264","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:c9e526b7d2ffc6bf3ac4931dcff81556bc62be0d4f2d73152330ba3ebf934138","target":"record","created_at":"2026-05-18T00:10:04Z","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":"01c0bb4408694d3210b8fcd7bc4a7e2bc89718c8c41123483ff4e551a5770718","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2017-04-13T19:29:45Z","title_canon_sha256":"86403dc60b0e1b9ccef28e994203cd759b0dc81afe916befce878f0b9e810ccf"},"schema_version":"1.0","source":{"id":"1704.04264","kind":"arxiv","version":1}},"canonical_sha256":"ef1ff3bba7db2ad42e72ff23cd87344bf31d50c7ce8c270d791362d74dbc61c3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ef1ff3bba7db2ad42e72ff23cd87344bf31d50c7ce8c270d791362d74dbc61c3","first_computed_at":"2026-05-18T00:10:04.293365Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:10:04.293365Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rs5Q5xcZL7L/bkrKPnVs9i43Bx7TP5+JYZ1Hu953MrDxDxJba9YEP0zRlPQN1dQ0m+JSD9t3yvYoYx3OQzDgBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:10:04.294089Z","signed_message":"canonical_sha256_bytes"},"source_id":"1704.04264","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c9e526b7d2ffc6bf3ac4931dcff81556bc62be0d4f2d73152330ba3ebf934138","sha256:840b5b829d127fef9b5c875478636dccbc982fb5d8b93e1f990f7c3959ba1531"],"state_sha256":"3166a86c73a341eb34838a4fd789e618e90321d81a92547bab29385f3463a47c"}