{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:4G45BG4HLCXNPIBS7BFUNSNJ5V","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":"2b2b22407ac4e40359a19eb66ebe0a2351415c4a020b7702ae751e096099b6e7","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2021-07-19T13:00:13Z","title_canon_sha256":"f0d1b6f472a4bf933200dc9043b4069ef6560919390e74e7cf4171afbb6b6bda"},"schema_version":"1.0","source":{"id":"2107.08843","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2107.08843","created_at":"2026-07-05T02:58:53Z"},{"alias_kind":"arxiv_version","alias_value":"2107.08843v1","created_at":"2026-07-05T02:58:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2107.08843","created_at":"2026-07-05T02:58:53Z"},{"alias_kind":"pith_short_12","alias_value":"4G45BG4HLCXN","created_at":"2026-07-05T02:58:53Z"},{"alias_kind":"pith_short_16","alias_value":"4G45BG4HLCXNPIBS","created_at":"2026-07-05T02:58:53Z"},{"alias_kind":"pith_short_8","alias_value":"4G45BG4H","created_at":"2026-07-05T02:58:53Z"}],"graph_snapshots":[{"event_id":"sha256:6cf3e5311c01841b18c475f4df0cd6643b46518160874447ad0b8fc75ef9b952","target":"graph","created_at":"2026-07-05T02:58:53Z","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/2107.08843/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Integrated single-mode microlasers with ultra-narrow linewidths play a game-changing role in a broad spectrum of applications ranging from coherent communication and LIDAR to metrology and sensing. Generation of such light sources in a controllable and cost-effective manner remains an outstanding challenge due to the difficulties in the realization of ultra-high Q active micro-resonators with suppressed mode numbers. Here, we report a microlaser generated in an ultra-high Q Erbium doped lithium niobate (LN) micro-disk. Through the formation of coherently combined polygon modes at both pump and","authors_text":"Haisu Zhang, Jianglin Guan, Jintian Lin, Li Deng, Lingling Qiao, Min Wang, Ni Yao, Renhong Gao, Saeed Farajollahi, Tao Lu, Wei Fang, Ya Cheng, Zhiwei Fang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2021-07-19T13:00:13Z","title":"Coherent mode-combined ultra-narrow-linewidth single-mode micro-disk laser"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2107.08843","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":"sha256:729e4902d8142e33fa236d81aa9d69fafbfdee21df29257bbe4254e14e3d5687","target":"record","created_at":"2026-07-05T02:58:53Z","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":"2b2b22407ac4e40359a19eb66ebe0a2351415c4a020b7702ae751e096099b6e7","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2021-07-19T13:00:13Z","title_canon_sha256":"f0d1b6f472a4bf933200dc9043b4069ef6560919390e74e7cf4171afbb6b6bda"},"schema_version":"1.0","source":{"id":"2107.08843","kind":"arxiv","version":1}},"canonical_sha256":"e1b9d09b8758aed7a032f84b46c9a9ed7ca70d4ee0018eb93b91a60e46ac3dca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e1b9d09b8758aed7a032f84b46c9a9ed7ca70d4ee0018eb93b91a60e46ac3dca","first_computed_at":"2026-07-05T02:58:53.594376Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:58:53.594376Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Fci4fYNlMdND/x1KAIYio9PWErYRjq9yxrZ0HLbO0r/CiuhfGg4azorFtuz+wp0pSPoFtFwkAk3xZoX0BJB3Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:58:53.594801Z","signed_message":"canonical_sha256_bytes"},"source_id":"2107.08843","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:729e4902d8142e33fa236d81aa9d69fafbfdee21df29257bbe4254e14e3d5687","sha256:6cf3e5311c01841b18c475f4df0cd6643b46518160874447ad0b8fc75ef9b952"],"state_sha256":"1554fcc6e27711e57abcfc1dc3b6f3c6bba25ae131d0672a59acfd37b0669314"}