{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:7EGT24UGINGO6M3GTQ4K2RXAFZ","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":"9b13cc7fdfdb82c971ff80f42507e60b5f63b7e98dee38a2ec1aec48261675f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-07-07T01:41:23Z","title_canon_sha256":"0ec35c040c0e316be9c09cf20dddf4a2b2a3b94b831865222044c07d5b429797"},"schema_version":"1.0","source":{"id":"1607.01850","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.01850","created_at":"2026-05-18T00:35:44Z"},{"alias_kind":"arxiv_version","alias_value":"1607.01850v1","created_at":"2026-05-18T00:35:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.01850","created_at":"2026-05-18T00:35:44Z"},{"alias_kind":"pith_short_12","alias_value":"7EGT24UGINGO","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7EGT24UGINGO6M3G","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7EGT24UG","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:b08fde4eb9cdc80597cc9705e047af15096b8dec887413878db2473c572adff6","target":"graph","created_at":"2026-05-18T00:35:44Z","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":"Kerr nonlinearity based frequency combs and solitons have been generated from on-chip optical microresonators with high quality factors and global or local anomalous dispersion. However, fabrication of such resonators usually requires materials and/or processes that are not standard in semiconductor manufacturing facilities. Moreover, in certain frequency regimes such as visible and ultra-violet, the large normal material dispersion makes it extremely difficult to achieve anomalous dispersion. Here we present a concentric racetrack-shaped resonator that achieves anomalous dispersion in a 300 n","authors_text":"Andrew M. Weiner, Chengying Bao, Cong Wang, Daniel E. Leaird, Jose A. Jaramillo-Villegas, Kyunghun Han, Minghao Qi, Sangsik Kim, Xiaoxiao Xue, Yi Xuan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-07-07T01:41:23Z","title":"Frequency Comb Generation in 300 nm Thick SiN Concentric-Racetrack-Resonators: Overcoming the Material Dispersion Limit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.01850","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":"sha256:4f74e690ea32e59470bbaa7731463533d1886ba0662a31b7fa544ad8f5d8ca4b","target":"record","created_at":"2026-05-18T00:35:44Z","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":"9b13cc7fdfdb82c971ff80f42507e60b5f63b7e98dee38a2ec1aec48261675f5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-07-07T01:41:23Z","title_canon_sha256":"0ec35c040c0e316be9c09cf20dddf4a2b2a3b94b831865222044c07d5b429797"},"schema_version":"1.0","source":{"id":"1607.01850","kind":"arxiv","version":1}},"canonical_sha256":"f90d3d7286434cef33669c38ad46e02e577db751043d949e2459dc3fc2bb70a2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f90d3d7286434cef33669c38ad46e02e577db751043d949e2459dc3fc2bb70a2","first_computed_at":"2026-05-18T00:35:44.213104Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:35:44.213104Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IE1uvM+xCcsFPdpy7ewFptdA1gP2/Loc9uvcmD0CiHEu+l4vS64GwevYZCkgAQGg5Fi4Y5TaI5O1oZwkyF4pDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:35:44.213612Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.01850","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4f74e690ea32e59470bbaa7731463533d1886ba0662a31b7fa544ad8f5d8ca4b","sha256:b08fde4eb9cdc80597cc9705e047af15096b8dec887413878db2473c572adff6"],"state_sha256":"64fbd31ae1a35bb2d462921c622dfba169a8da56b07d2deeec0ebe4e85a011d1"}