{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:QWR7RTH2YCMMFPD6X3TGMXO3OX","short_pith_number":"pith:QWR7RTH2","canonical_record":{"source":{"id":"1608.02570","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-08-08T19:43:39Z","cross_cats_sorted":[],"title_canon_sha256":"9a7fe5cdd0fd95a0fb511d3252c1739f74a8b431ff86733bfc4769dffa95376e","abstract_canon_sha256":"94885c8accada4137db1edf2b21779849029a4aa5b7a88a1316b510487450738"},"schema_version":"1.0"},"canonical_sha256":"85a3f8ccfac098c2bc7ebee6665ddb75f93d8dbb2933d0a491d4330615e273bd","source":{"kind":"arxiv","id":"1608.02570","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.02570","created_at":"2026-05-18T01:00:25Z"},{"alias_kind":"arxiv_version","alias_value":"1608.02570v2","created_at":"2026-05-18T01:00:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.02570","created_at":"2026-05-18T01:00:25Z"},{"alias_kind":"pith_short_12","alias_value":"QWR7RTH2YCMM","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"QWR7RTH2YCMMFPD6","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"QWR7RTH2","created_at":"2026-05-18T12:30:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:QWR7RTH2YCMMFPD6X3TGMXO3OX","target":"record","payload":{"canonical_record":{"source":{"id":"1608.02570","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-08-08T19:43:39Z","cross_cats_sorted":[],"title_canon_sha256":"9a7fe5cdd0fd95a0fb511d3252c1739f74a8b431ff86733bfc4769dffa95376e","abstract_canon_sha256":"94885c8accada4137db1edf2b21779849029a4aa5b7a88a1316b510487450738"},"schema_version":"1.0"},"canonical_sha256":"85a3f8ccfac098c2bc7ebee6665ddb75f93d8dbb2933d0a491d4330615e273bd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:00:25.280142Z","signature_b64":"MvkiwtqsoKMINIWKz5FYtLl4FkI+NHkAxIh3PvtVBgRjdWDuLZTWFA5lh6t902/rTYFEuBUexQMi+MpUClwFDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85a3f8ccfac098c2bc7ebee6665ddb75f93d8dbb2933d0a491d4330615e273bd","last_reissued_at":"2026-05-18T01:00:25.279692Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:00:25.279692Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1608.02570","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":"2026-05-18T01:00:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"shPL4VNXITyWlBWdMtzegYovH5/y1/YTSdFPgBpS0/uM/5IX98TJ7Mxv1saVW4O8grLQ5HLRxz+2FEA6zJBxBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T05:56:39.907807Z"},"content_sha256":"78062618ff8759ec86ab48c8c8aaeb42b9858d3248a40df64ed721225f534f3d","schema_version":"1.0","event_id":"sha256:78062618ff8759ec86ab48c8c8aaeb42b9858d3248a40df64ed721225f534f3d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:QWR7RTH2YCMMFPD6X3TGMXO3OX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Resonantly enhanced second-harmonic generation using III-V semiconductor all-dielectric metasurfaces","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Frank Setzpfandt, Gordon A. Keeler, Gregory M. Peake, Igal Brener, Isabelle Staude, John Reno, Michael B. Sinclair, Sheng Liu, Sina Saravi, Thomas Pertsch, Yuanmu Yang","submitted_at":"2016-08-08T19:43:39Z","abstract_excerpt":"Nonlinear optical phenomena in nanostructured materials have been challenging our perceptions of nonlinear optical processes that have been explored since the invention of lasers. For example, the ability to control optical field confinement, enhancement, and scattering almost independently, allows nonlinear frequency conversion efficiencies to be enhanced by many orders of magnitude compared to bulk materials. Also, the subwavelength length scale renders phase matching issues irrelevant. Compared with plasmonic nanostructures, dielectric resonator metamaterials show great promise for enhanced"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.02570","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":""},"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":"2026-05-18T01:00:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Do3JRUbDP2/GsiUuy+sfVmaEEMUyXicq3ETiXqHz+N/JYXyi+emMZ+mbKMBpUUamwZOBARr6C9unnduSeByTAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T05:56:39.908401Z"},"content_sha256":"2cb14a072afa48581a5b644bf20a0240520fb29286bf60f549fe9c6e7e103dbe","schema_version":"1.0","event_id":"sha256:2cb14a072afa48581a5b644bf20a0240520fb29286bf60f549fe9c6e7e103dbe"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QWR7RTH2YCMMFPD6X3TGMXO3OX/bundle.json","state_url":"https://pith.science/pith/QWR7RTH2YCMMFPD6X3TGMXO3OX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QWR7RTH2YCMMFPD6X3TGMXO3OX/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":"2026-05-20T05:56:39Z","links":{"resolver":"https://pith.science/pith/QWR7RTH2YCMMFPD6X3TGMXO3OX","bundle":"https://pith.science/pith/QWR7RTH2YCMMFPD6X3TGMXO3OX/bundle.json","state":"https://pith.science/pith/QWR7RTH2YCMMFPD6X3TGMXO3OX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QWR7RTH2YCMMFPD6X3TGMXO3OX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:QWR7RTH2YCMMFPD6X3TGMXO3OX","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":"94885c8accada4137db1edf2b21779849029a4aa5b7a88a1316b510487450738","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-08-08T19:43:39Z","title_canon_sha256":"9a7fe5cdd0fd95a0fb511d3252c1739f74a8b431ff86733bfc4769dffa95376e"},"schema_version":"1.0","source":{"id":"1608.02570","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1608.02570","created_at":"2026-05-18T01:00:25Z"},{"alias_kind":"arxiv_version","alias_value":"1608.02570v2","created_at":"2026-05-18T01:00:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1608.02570","created_at":"2026-05-18T01:00:25Z"},{"alias_kind":"pith_short_12","alias_value":"QWR7RTH2YCMM","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_16","alias_value":"QWR7RTH2YCMMFPD6","created_at":"2026-05-18T12:30:41Z"},{"alias_kind":"pith_short_8","alias_value":"QWR7RTH2","created_at":"2026-05-18T12:30:41Z"}],"graph_snapshots":[{"event_id":"sha256:2cb14a072afa48581a5b644bf20a0240520fb29286bf60f549fe9c6e7e103dbe","target":"graph","created_at":"2026-05-18T01:00:25Z","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":"Nonlinear optical phenomena in nanostructured materials have been challenging our perceptions of nonlinear optical processes that have been explored since the invention of lasers. For example, the ability to control optical field confinement, enhancement, and scattering almost independently, allows nonlinear frequency conversion efficiencies to be enhanced by many orders of magnitude compared to bulk materials. Also, the subwavelength length scale renders phase matching issues irrelevant. Compared with plasmonic nanostructures, dielectric resonator metamaterials show great promise for enhanced","authors_text":"Frank Setzpfandt, Gordon A. Keeler, Gregory M. Peake, Igal Brener, Isabelle Staude, John Reno, Michael B. Sinclair, Sheng Liu, Sina Saravi, Thomas Pertsch, Yuanmu Yang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-08-08T19:43:39Z","title":"Resonantly enhanced second-harmonic generation using III-V semiconductor all-dielectric metasurfaces"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1608.02570","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":"sha256:78062618ff8759ec86ab48c8c8aaeb42b9858d3248a40df64ed721225f534f3d","target":"record","created_at":"2026-05-18T01:00:25Z","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":"94885c8accada4137db1edf2b21779849029a4aa5b7a88a1316b510487450738","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2016-08-08T19:43:39Z","title_canon_sha256":"9a7fe5cdd0fd95a0fb511d3252c1739f74a8b431ff86733bfc4769dffa95376e"},"schema_version":"1.0","source":{"id":"1608.02570","kind":"arxiv","version":2}},"canonical_sha256":"85a3f8ccfac098c2bc7ebee6665ddb75f93d8dbb2933d0a491d4330615e273bd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85a3f8ccfac098c2bc7ebee6665ddb75f93d8dbb2933d0a491d4330615e273bd","first_computed_at":"2026-05-18T01:00:25.279692Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:00:25.279692Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"MvkiwtqsoKMINIWKz5FYtLl4FkI+NHkAxIh3PvtVBgRjdWDuLZTWFA5lh6t902/rTYFEuBUexQMi+MpUClwFDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:00:25.280142Z","signed_message":"canonical_sha256_bytes"},"source_id":"1608.02570","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:78062618ff8759ec86ab48c8c8aaeb42b9858d3248a40df64ed721225f534f3d","sha256:2cb14a072afa48581a5b644bf20a0240520fb29286bf60f549fe9c6e7e103dbe"],"state_sha256":"9547af163af62806298fd23a1d05d3535156e895322ad1ca8136913faba6cabe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lGFmNok1sndsQA9sZjlS9A2tClnAkEgOB9jNxwP+Io5NGD3h00BO9AlUgngd7R9i9BZ2UtGpliOdoDHEPBQUDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T05:56:39.912170Z","bundle_sha256":"ee69fb1b86eb11bd774c8ec4f39e7687ff3efac116bbc82ed8bdf1ef8c6f386d"}}