{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:SXQL7JMH53UFJ5HZZDDR736C5F","short_pith_number":"pith:SXQL7JMH","canonical_record":{"source":{"id":"2106.14407","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2021-06-28T05:46:54Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"f80794522020f056403f2eb4caf314faf11658d11faf3d538f39e07624d6b012","abstract_canon_sha256":"e9120be14e8e7b0d65b4fff980ebb9f4f7e0abb23512f27abd0cbd50d42aefeb"},"schema_version":"1.0"},"canonical_sha256":"95e0bfa587eee854f4f9c8c71fefc2e97813ad7849cd13fad0d0ce5444a06dcc","source":{"kind":"arxiv","id":"2106.14407","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.14407","created_at":"2026-07-05T02:52:50Z"},{"alias_kind":"arxiv_version","alias_value":"2106.14407v1","created_at":"2026-07-05T02:52:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.14407","created_at":"2026-07-05T02:52:50Z"},{"alias_kind":"pith_short_12","alias_value":"SXQL7JMH53UF","created_at":"2026-07-05T02:52:50Z"},{"alias_kind":"pith_short_16","alias_value":"SXQL7JMH53UFJ5HZ","created_at":"2026-07-05T02:52:50Z"},{"alias_kind":"pith_short_8","alias_value":"SXQL7JMH","created_at":"2026-07-05T02:52:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:SXQL7JMH53UFJ5HZZDDR736C5F","target":"record","payload":{"canonical_record":{"source":{"id":"2106.14407","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2021-06-28T05:46:54Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"f80794522020f056403f2eb4caf314faf11658d11faf3d538f39e07624d6b012","abstract_canon_sha256":"e9120be14e8e7b0d65b4fff980ebb9f4f7e0abb23512f27abd0cbd50d42aefeb"},"schema_version":"1.0"},"canonical_sha256":"95e0bfa587eee854f4f9c8c71fefc2e97813ad7849cd13fad0d0ce5444a06dcc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:52:50.379037Z","signature_b64":"L+1Lq9hi3oRo4Jo3ztfSxsSkC/iqW8FFjdc1CY3G1OHk6gklcWaqyXcpdKmqVjMU72Ctb2aYW8yp5ZXXsSTTBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"95e0bfa587eee854f4f9c8c71fefc2e97813ad7849cd13fad0d0ce5444a06dcc","last_reissued_at":"2026-07-05T02:52:50.378606Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:52:50.378606Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2106.14407","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":"2026-07-05T02:52:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KwoIWO4hukFu6M5ApJ5jL0BSQqLFjS4CKwcvdGn03F64eWzVsEmAmGtjdGoN81v012UGWrLZnN0Dj31aiVnqAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T07:36:43.652327Z"},"content_sha256":"65b760ba4100b0430e1d09d81ec57764c838ee02554c3d1502a7e3f96ef0ff73","schema_version":"1.0","event_id":"sha256:65b760ba4100b0430e1d09d81ec57764c838ee02554c3d1502a7e3f96ef0ff73"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:SXQL7JMH53UFJ5HZZDDR736C5F","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lithium niobate microring with ultra-high Q factor above 10^8","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"physics.optics","authors_text":"Jianglin Guan, Jintian Lin, Li Deng, Lingling Qiao, Min Wang, Ni Yao, Renhong Gao, Wei Fang, Ya Cheng","submitted_at":"2021-06-28T05:46:54Z","abstract_excerpt":"We demonstrate ultra-high Q factor microring resonators close to the intrinsic material absorption limit on lithium niobate on insulator. The microrings are fabricated on pristine lithium niobate (LN) thin film wafer thinned from LN bulk via chemo-mechanical etching without ion slicing and ion etching. A record-high Q factor up to times ten to the power of 8th at the wavelength of 1550 nm is achieved because of the ultra-smooth interface of the microrings and the absence of ion induced lattice damage, indicating an ultra-low waveguide propagation loss of about 0.28 dB per meter. The ultra-high"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.14407","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/2106.14407/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":"2026-07-05T02:52:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XKP82ZxGH/a4BvPXqxUCaar+nTVxSnNW1XjAiRNQeuKl2nToI+OnqkMaJSkl4qPgzgOfm7pUDQKn1kuHp0BkDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T07:36:43.652704Z"},"content_sha256":"e0fa7ff21fc05e4b6cf265fc850037a4eabc852970ee9dda9e8359341135b999","schema_version":"1.0","event_id":"sha256:e0fa7ff21fc05e4b6cf265fc850037a4eabc852970ee9dda9e8359341135b999"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SXQL7JMH53UFJ5HZZDDR736C5F/bundle.json","state_url":"https://pith.science/pith/SXQL7JMH53UFJ5HZZDDR736C5F/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SXQL7JMH53UFJ5HZZDDR736C5F/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":"2026-08-01T07:36:43Z","links":{"resolver":"https://pith.science/pith/SXQL7JMH53UFJ5HZZDDR736C5F","bundle":"https://pith.science/pith/SXQL7JMH53UFJ5HZZDDR736C5F/bundle.json","state":"https://pith.science/pith/SXQL7JMH53UFJ5HZZDDR736C5F/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SXQL7JMH53UFJ5HZZDDR736C5F/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:SXQL7JMH53UFJ5HZZDDR736C5F","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":"e9120be14e8e7b0d65b4fff980ebb9f4f7e0abb23512f27abd0cbd50d42aefeb","cross_cats_sorted":["physics.app-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2021-06-28T05:46:54Z","title_canon_sha256":"f80794522020f056403f2eb4caf314faf11658d11faf3d538f39e07624d6b012"},"schema_version":"1.0","source":{"id":"2106.14407","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2106.14407","created_at":"2026-07-05T02:52:50Z"},{"alias_kind":"arxiv_version","alias_value":"2106.14407v1","created_at":"2026-07-05T02:52:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2106.14407","created_at":"2026-07-05T02:52:50Z"},{"alias_kind":"pith_short_12","alias_value":"SXQL7JMH53UF","created_at":"2026-07-05T02:52:50Z"},{"alias_kind":"pith_short_16","alias_value":"SXQL7JMH53UFJ5HZ","created_at":"2026-07-05T02:52:50Z"},{"alias_kind":"pith_short_8","alias_value":"SXQL7JMH","created_at":"2026-07-05T02:52:50Z"}],"graph_snapshots":[{"event_id":"sha256:e0fa7ff21fc05e4b6cf265fc850037a4eabc852970ee9dda9e8359341135b999","target":"graph","created_at":"2026-07-05T02:52:50Z","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/2106.14407/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We demonstrate ultra-high Q factor microring resonators close to the intrinsic material absorption limit on lithium niobate on insulator. The microrings are fabricated on pristine lithium niobate (LN) thin film wafer thinned from LN bulk via chemo-mechanical etching without ion slicing and ion etching. A record-high Q factor up to times ten to the power of 8th at the wavelength of 1550 nm is achieved because of the ultra-smooth interface of the microrings and the absence of ion induced lattice damage, indicating an ultra-low waveguide propagation loss of about 0.28 dB per meter. The ultra-high","authors_text":"Jianglin Guan, Jintian Lin, Li Deng, Lingling Qiao, Min Wang, Ni Yao, Renhong Gao, Wei Fang, Ya Cheng","cross_cats":["physics.app-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2021-06-28T05:46:54Z","title":"Lithium niobate microring with ultra-high Q factor above 10^8"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2106.14407","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":"sha256:65b760ba4100b0430e1d09d81ec57764c838ee02554c3d1502a7e3f96ef0ff73","target":"record","created_at":"2026-07-05T02:52:50Z","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":"e9120be14e8e7b0d65b4fff980ebb9f4f7e0abb23512f27abd0cbd50d42aefeb","cross_cats_sorted":["physics.app-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2021-06-28T05:46:54Z","title_canon_sha256":"f80794522020f056403f2eb4caf314faf11658d11faf3d538f39e07624d6b012"},"schema_version":"1.0","source":{"id":"2106.14407","kind":"arxiv","version":1}},"canonical_sha256":"95e0bfa587eee854f4f9c8c71fefc2e97813ad7849cd13fad0d0ce5444a06dcc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"95e0bfa587eee854f4f9c8c71fefc2e97813ad7849cd13fad0d0ce5444a06dcc","first_computed_at":"2026-07-05T02:52:50.378606Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:52:50.378606Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"L+1Lq9hi3oRo4Jo3ztfSxsSkC/iqW8FFjdc1CY3G1OHk6gklcWaqyXcpdKmqVjMU72Ctb2aYW8yp5ZXXsSTTBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:52:50.379037Z","signed_message":"canonical_sha256_bytes"},"source_id":"2106.14407","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:65b760ba4100b0430e1d09d81ec57764c838ee02554c3d1502a7e3f96ef0ff73","sha256:e0fa7ff21fc05e4b6cf265fc850037a4eabc852970ee9dda9e8359341135b999"],"state_sha256":"0c2a4c130420c1164c176858df8f43ba4ec6b56bddac55286d15e2c26500b62d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cO6ujdc7rpnIskOwwrn2vg9u4yVsE6P56rlw5aAWSsm8mXJHj1QrhEyUY1xHffUD7DwDDv2h5tMcLydrSZl3BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T07:36:43.655386Z","bundle_sha256":"0b37c3b3a7edd87ce8f353e14512448fbbe46bc181d4809c1a801dfc5ff979d7"}}