{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:ALMCDH7LVMKAZ6V4YPYU3VX5XX","short_pith_number":"pith:ALMCDH7L","canonical_record":{"source":{"id":"2409.02874","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-09-04T16:58:26Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"280d592898e162ebc23c4340ff6f4376cd51d9b49640d169518874ed5a3f141f","abstract_canon_sha256":"0e57e4d94132d1eb88d7ebafe10c828226cfdbf503b96f293bf945dd58268458"},"schema_version":"1.0"},"canonical_sha256":"02d8219febab140cfabcc3f14dd6fdbdc38b1626f1a7aa61ee34218a47489a5c","source":{"kind":"arxiv","id":"2409.02874","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.02874","created_at":"2026-07-05T09:03:11Z"},{"alias_kind":"arxiv_version","alias_value":"2409.02874v1","created_at":"2026-07-05T09:03:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.02874","created_at":"2026-07-05T09:03:11Z"},{"alias_kind":"pith_short_12","alias_value":"ALMCDH7LVMKA","created_at":"2026-07-05T09:03:11Z"},{"alias_kind":"pith_short_16","alias_value":"ALMCDH7LVMKAZ6V4","created_at":"2026-07-05T09:03:11Z"},{"alias_kind":"pith_short_8","alias_value":"ALMCDH7L","created_at":"2026-07-05T09:03:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:ALMCDH7LVMKAZ6V4YPYU3VX5XX","target":"record","payload":{"canonical_record":{"source":{"id":"2409.02874","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-09-04T16:58:26Z","cross_cats_sorted":["physics.app-ph"],"title_canon_sha256":"280d592898e162ebc23c4340ff6f4376cd51d9b49640d169518874ed5a3f141f","abstract_canon_sha256":"0e57e4d94132d1eb88d7ebafe10c828226cfdbf503b96f293bf945dd58268458"},"schema_version":"1.0"},"canonical_sha256":"02d8219febab140cfabcc3f14dd6fdbdc38b1626f1a7aa61ee34218a47489a5c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:03:11.583745Z","signature_b64":"5gmxdZhRPRHtZ1u0laNH4CBkM3wYlnONbF4mjI8/rzFLWESZfyp44LK9psFwa9CA4VMPKGO9pu5ztDzfo0ehBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"02d8219febab140cfabcc3f14dd6fdbdc38b1626f1a7aa61ee34218a47489a5c","last_reissued_at":"2026-07-05T09:03:11.583262Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:03:11.583262Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2409.02874","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":"2026-07-05T09:03:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CziqUWDUc3ycqhzgNld/DNxXNg/G+IN9d2+MDVA5dw8vwPbPDO2hi1TU+DEBa+QTnD08KTHl7Ty9WvAC+cyyAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:23:26.289487Z"},"content_sha256":"ee3ae8b597bf9f861dcfc859fd1f1c1c85b65ea0239eb79a35e5e8cba6a29fa3","schema_version":"1.0","event_id":"sha256:ee3ae8b597bf9f861dcfc859fd1f1c1c85b65ea0239eb79a35e5e8cba6a29fa3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:ALMCDH7LVMKAZ6V4YPYU3VX5XX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Million-Q Free Space Meta-Optical Resonator at Visible Wavelengths","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.app-ph"],"primary_cat":"physics.optics","authors_text":"Abhinav Kala, Andrea Alu, Andrew Tang, Arka Majumdar, Arnab Manna, Christopher Munley, David Sharp, Enrico M. Renzi, Hannah Rarick, Jie Fang, Kan Yao, Rui Chen, Sander A. Mann, Sinabu Pumulo, Vinod M. Menon, Yuebing Zheng","submitted_at":"2024-09-04T16:58:26Z","abstract_excerpt":"High-quality (Q)-factor optical resonators with extreme temporal coherence are of both technological and fundamental importance in optical metrology, continuous-wave lasing, and semiconductor quantum optics. Despite extensive efforts in designing high-Q resonators across different spectral regimes, the experimental realization of very large Q-factors at visible wavelengths remains challenging due to the small feature size that is sensitive to fabrication imperfections, and thus is typically implemented in integrated photonics. In the pursuit of free-space optics with the benefits of large spac"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.02874","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/2409.02874/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":"2026-07-05T09:03:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rGHY6ANzOfGDwF83IcuOtUMLyD4sNw4o1yb5PpRDX5uRq6IE+oDpP9cs8mUdJgk9u9Q+fUvLxRxNSnT2B0I7BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:23:26.290494Z"},"content_sha256":"43dbb5627f4aa34b79ef7c36243e50486aabe86389a433c4a1c785d96615f015","schema_version":"1.0","event_id":"sha256:43dbb5627f4aa34b79ef7c36243e50486aabe86389a433c4a1c785d96615f015"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ALMCDH7LVMKAZ6V4YPYU3VX5XX/bundle.json","state_url":"https://pith.science/pith/ALMCDH7LVMKAZ6V4YPYU3VX5XX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ALMCDH7LVMKAZ6V4YPYU3VX5XX/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":"2026-08-04T08:23:26Z","links":{"resolver":"https://pith.science/pith/ALMCDH7LVMKAZ6V4YPYU3VX5XX","bundle":"https://pith.science/pith/ALMCDH7LVMKAZ6V4YPYU3VX5XX/bundle.json","state":"https://pith.science/pith/ALMCDH7LVMKAZ6V4YPYU3VX5XX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ALMCDH7LVMKAZ6V4YPYU3VX5XX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:ALMCDH7LVMKAZ6V4YPYU3VX5XX","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":"0e57e4d94132d1eb88d7ebafe10c828226cfdbf503b96f293bf945dd58268458","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-09-04T16:58:26Z","title_canon_sha256":"280d592898e162ebc23c4340ff6f4376cd51d9b49640d169518874ed5a3f141f"},"schema_version":"1.0","source":{"id":"2409.02874","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.02874","created_at":"2026-07-05T09:03:11Z"},{"alias_kind":"arxiv_version","alias_value":"2409.02874v1","created_at":"2026-07-05T09:03:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.02874","created_at":"2026-07-05T09:03:11Z"},{"alias_kind":"pith_short_12","alias_value":"ALMCDH7LVMKA","created_at":"2026-07-05T09:03:11Z"},{"alias_kind":"pith_short_16","alias_value":"ALMCDH7LVMKAZ6V4","created_at":"2026-07-05T09:03:11Z"},{"alias_kind":"pith_short_8","alias_value":"ALMCDH7L","created_at":"2026-07-05T09:03:11Z"}],"graph_snapshots":[{"event_id":"sha256:43dbb5627f4aa34b79ef7c36243e50486aabe86389a433c4a1c785d96615f015","target":"graph","created_at":"2026-07-05T09:03:11Z","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/2409.02874/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"High-quality (Q)-factor optical resonators with extreme temporal coherence are of both technological and fundamental importance in optical metrology, continuous-wave lasing, and semiconductor quantum optics. Despite extensive efforts in designing high-Q resonators across different spectral regimes, the experimental realization of very large Q-factors at visible wavelengths remains challenging due to the small feature size that is sensitive to fabrication imperfections, and thus is typically implemented in integrated photonics. In the pursuit of free-space optics with the benefits of large spac","authors_text":"Abhinav Kala, Andrea Alu, Andrew Tang, Arka Majumdar, Arnab Manna, Christopher Munley, David Sharp, Enrico M. Renzi, Hannah Rarick, Jie Fang, Kan Yao, Rui Chen, Sander A. Mann, Sinabu Pumulo, Vinod M. Menon, Yuebing Zheng","cross_cats":["physics.app-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-09-04T16:58:26Z","title":"Million-Q Free Space Meta-Optical Resonator at Visible Wavelengths"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.02874","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:ee3ae8b597bf9f861dcfc859fd1f1c1c85b65ea0239eb79a35e5e8cba6a29fa3","target":"record","created_at":"2026-07-05T09:03:11Z","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":"0e57e4d94132d1eb88d7ebafe10c828226cfdbf503b96f293bf945dd58268458","cross_cats_sorted":["physics.app-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2024-09-04T16:58:26Z","title_canon_sha256":"280d592898e162ebc23c4340ff6f4376cd51d9b49640d169518874ed5a3f141f"},"schema_version":"1.0","source":{"id":"2409.02874","kind":"arxiv","version":1}},"canonical_sha256":"02d8219febab140cfabcc3f14dd6fdbdc38b1626f1a7aa61ee34218a47489a5c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"02d8219febab140cfabcc3f14dd6fdbdc38b1626f1a7aa61ee34218a47489a5c","first_computed_at":"2026-07-05T09:03:11.583262Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:03:11.583262Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5gmxdZhRPRHtZ1u0laNH4CBkM3wYlnONbF4mjI8/rzFLWESZfyp44LK9psFwa9CA4VMPKGO9pu5ztDzfo0ehBA==","signature_status":"signed_v1","signed_at":"2026-07-05T09:03:11.583745Z","signed_message":"canonical_sha256_bytes"},"source_id":"2409.02874","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ee3ae8b597bf9f861dcfc859fd1f1c1c85b65ea0239eb79a35e5e8cba6a29fa3","sha256:43dbb5627f4aa34b79ef7c36243e50486aabe86389a433c4a1c785d96615f015"],"state_sha256":"00b4cd85f12d497f6c8a9ef0d5a73c4f08afddaa47126714822bed73fff18487"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yTrKXfEzuZO6jDJE9SyeBp+YaDBEPPzpyY+jd1G/FGvjItMFhFECXEFkdL0svUnd2viw10TK5IVwxRYD1PjqBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T08:23:26.297923Z","bundle_sha256":"2e7f3dcbd13f41445f968305840a9d2c57173725f71f4156a7fb06b3e2c1b92b"}}