{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:WLVP7GX3YIVRUTFFLQWPJTXD7L","short_pith_number":"pith:WLVP7GX3","canonical_record":{"source":{"id":"2006.10908","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-06-19T00:43:08Z","cross_cats_sorted":[],"title_canon_sha256":"90b1f70fc58780476d1b5fc070c415c50ad1ce41129bc79d49e5ece52db947f5","abstract_canon_sha256":"86ae6fb333a98cc86aeabc7ab454eb564bb769b5ee0d2d28a432528e4b463d79"},"schema_version":"1.0"},"canonical_sha256":"b2eaff9afbc22b1a4ca55c2cf4cee3fac51c510ba009798158367a1e7b6692a5","source":{"kind":"arxiv","id":"2006.10908","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.10908","created_at":"2026-07-05T02:55:31Z"},{"alias_kind":"arxiv_version","alias_value":"2006.10908v2","created_at":"2026-07-05T02:55:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.10908","created_at":"2026-07-05T02:55:31Z"},{"alias_kind":"pith_short_12","alias_value":"WLVP7GX3YIVR","created_at":"2026-07-05T02:55:31Z"},{"alias_kind":"pith_short_16","alias_value":"WLVP7GX3YIVRUTFF","created_at":"2026-07-05T02:55:31Z"},{"alias_kind":"pith_short_8","alias_value":"WLVP7GX3","created_at":"2026-07-05T02:55:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:WLVP7GX3YIVRUTFFLQWPJTXD7L","target":"record","payload":{"canonical_record":{"source":{"id":"2006.10908","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-06-19T00:43:08Z","cross_cats_sorted":[],"title_canon_sha256":"90b1f70fc58780476d1b5fc070c415c50ad1ce41129bc79d49e5ece52db947f5","abstract_canon_sha256":"86ae6fb333a98cc86aeabc7ab454eb564bb769b5ee0d2d28a432528e4b463d79"},"schema_version":"1.0"},"canonical_sha256":"b2eaff9afbc22b1a4ca55c2cf4cee3fac51c510ba009798158367a1e7b6692a5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:55:31.009586Z","signature_b64":"pUGiupKaj3LkuWZtegg6dwtlN46PJfuVoZfNNoWBYdNG9LgQK2qe7Wzx+Kntsjr0BOse0Kn9EcJ3WLRmwZ+ZAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b2eaff9afbc22b1a4ca55c2cf4cee3fac51c510ba009798158367a1e7b6692a5","last_reissued_at":"2026-07-05T02:55:31.009094Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:55:31.009094Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.10908","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:55:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+NYIO3KmyjLSaZTnNpHAsD1KsijgLMwwveQwk8+v9Yrj8kCf6v0Pnc6ZSa2p6Cv0Vzlq5OQF2zkOm6uZlwaTCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:21:57.176610Z"},"content_sha256":"7cab2e5d7d3e3f3da2ee255e5754dc8115dd05ec8528b32664c29eb3644ac044","schema_version":"1.0","event_id":"sha256:7cab2e5d7d3e3f3da2ee255e5754dc8115dd05ec8528b32664c29eb3644ac044"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:WLVP7GX3YIVRUTFFLQWPJTXD7L","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Highly Efficient Second Harmonic Generation of Thin Film Lithium Niobate Nanograting near Bound States in the Continuum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Heyuan Guan, Huihui Lu, Jiangli Dong, Jumei Shang, Ke Li, Mengjia Wang, Wentao Qiu, Yang Li, Zhe Chen, Zhijin Huang","submitted_at":"2020-06-19T00:43:08Z","abstract_excerpt":"Bound states in the continuum (BICs), a concept from quantum mechanics, are ubiquitous physical phenomena where waves will be completely locked inside physical systems without energy leaky. Such a physical phenomenon in optics will provide a platform for optical mode confinement to strengthen local field enhancement in nonlinear optics. Here we utilize an optical system consisting of asymmetric nanogratings and waveguide of thin film lithium niobate (LiNbO3) material to enhance second harmonic response near BICs. By breaking the symmetry of grating periodicity, we realize strong local field co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.10908","kind":"arxiv","version":2},"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/2006.10908/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":"2026-07-05T02:55:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+HVJNxOvCFcB9QdZNwKZxdboaSAXKz79C5F2H6Rzl6psya/WQzTuCnRR1M8kYYR2BC+VDgY0RpyBlgdcL5dnCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T10:21:57.176975Z"},"content_sha256":"842ab9343869e4e5b46922f05d82bb92a2af29e9b3f5bf6d0c42ca5895d36455","schema_version":"1.0","event_id":"sha256:842ab9343869e4e5b46922f05d82bb92a2af29e9b3f5bf6d0c42ca5895d36455"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/WLVP7GX3YIVRUTFFLQWPJTXD7L/bundle.json","state_url":"https://pith.science/pith/WLVP7GX3YIVRUTFFLQWPJTXD7L/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/WLVP7GX3YIVRUTFFLQWPJTXD7L/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":"2026-07-07T10:21:57Z","links":{"resolver":"https://pith.science/pith/WLVP7GX3YIVRUTFFLQWPJTXD7L","bundle":"https://pith.science/pith/WLVP7GX3YIVRUTFFLQWPJTXD7L/bundle.json","state":"https://pith.science/pith/WLVP7GX3YIVRUTFFLQWPJTXD7L/state.json","well_known_bundle":"https://pith.science/.well-known/pith/WLVP7GX3YIVRUTFFLQWPJTXD7L/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:WLVP7GX3YIVRUTFFLQWPJTXD7L","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":"86ae6fb333a98cc86aeabc7ab454eb564bb769b5ee0d2d28a432528e4b463d79","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-06-19T00:43:08Z","title_canon_sha256":"90b1f70fc58780476d1b5fc070c415c50ad1ce41129bc79d49e5ece52db947f5"},"schema_version":"1.0","source":{"id":"2006.10908","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.10908","created_at":"2026-07-05T02:55:31Z"},{"alias_kind":"arxiv_version","alias_value":"2006.10908v2","created_at":"2026-07-05T02:55:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.10908","created_at":"2026-07-05T02:55:31Z"},{"alias_kind":"pith_short_12","alias_value":"WLVP7GX3YIVR","created_at":"2026-07-05T02:55:31Z"},{"alias_kind":"pith_short_16","alias_value":"WLVP7GX3YIVRUTFF","created_at":"2026-07-05T02:55:31Z"},{"alias_kind":"pith_short_8","alias_value":"WLVP7GX3","created_at":"2026-07-05T02:55:31Z"}],"graph_snapshots":[{"event_id":"sha256:842ab9343869e4e5b46922f05d82bb92a2af29e9b3f5bf6d0c42ca5895d36455","target":"graph","created_at":"2026-07-05T02:55:31Z","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/2006.10908/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Bound states in the continuum (BICs), a concept from quantum mechanics, are ubiquitous physical phenomena where waves will be completely locked inside physical systems without energy leaky. Such a physical phenomenon in optics will provide a platform for optical mode confinement to strengthen local field enhancement in nonlinear optics. Here we utilize an optical system consisting of asymmetric nanogratings and waveguide of thin film lithium niobate (LiNbO3) material to enhance second harmonic response near BICs. By breaking the symmetry of grating periodicity, we realize strong local field co","authors_text":"Heyuan Guan, Huihui Lu, Jiangli Dong, Jumei Shang, Ke Li, Mengjia Wang, Wentao Qiu, Yang Li, Zhe Chen, Zhijin Huang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-06-19T00:43:08Z","title":"Highly Efficient Second Harmonic Generation of Thin Film Lithium Niobate Nanograting near Bound States in the Continuum"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.10908","kind":"arxiv","version":2},"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":"sha256:7cab2e5d7d3e3f3da2ee255e5754dc8115dd05ec8528b32664c29eb3644ac044","target":"record","created_at":"2026-07-05T02:55:31Z","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":"86ae6fb333a98cc86aeabc7ab454eb564bb769b5ee0d2d28a432528e4b463d79","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2020-06-19T00:43:08Z","title_canon_sha256":"90b1f70fc58780476d1b5fc070c415c50ad1ce41129bc79d49e5ece52db947f5"},"schema_version":"1.0","source":{"id":"2006.10908","kind":"arxiv","version":2}},"canonical_sha256":"b2eaff9afbc22b1a4ca55c2cf4cee3fac51c510ba009798158367a1e7b6692a5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b2eaff9afbc22b1a4ca55c2cf4cee3fac51c510ba009798158367a1e7b6692a5","first_computed_at":"2026-07-05T02:55:31.009094Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:55:31.009094Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pUGiupKaj3LkuWZtegg6dwtlN46PJfuVoZfNNoWBYdNG9LgQK2qe7Wzx+Kntsjr0BOse0Kn9EcJ3WLRmwZ+ZAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T02:55:31.009586Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.10908","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7cab2e5d7d3e3f3da2ee255e5754dc8115dd05ec8528b32664c29eb3644ac044","sha256:842ab9343869e4e5b46922f05d82bb92a2af29e9b3f5bf6d0c42ca5895d36455"],"state_sha256":"d828fcba6b8d29b7da09507b4afc68a8da8d34c9fea477cb75f31c59486b2f00"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FMLCFSvtWIivAx9a0LbsB7GkgtWr4JJ4Qx9ZdX/sgeiKldG8a1jLxJ/Gf66ZYxmjEuJShBfvwu0wgqWge6/0Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T10:21:57.179407Z","bundle_sha256":"e4c63f5df19eb6c31f8f4b78f342588b04735624a5c751234993493e82e17ae7"}}