{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:GJKAC6QWC33DXV7TRQCGLA7CLP","short_pith_number":"pith:GJKAC6QW","canonical_record":{"source":{"id":"2404.01432","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-04-01T19:07:52Z","cross_cats_sorted":[],"title_canon_sha256":"d15092ec5e19a611694ebcc6e19295eac472ec27094ed0d8dad137d758a1151e","abstract_canon_sha256":"9ed9ffe4f91620a7a99567d01a761c6c8563a07fdfc473c4f6baf2d3ceff6003"},"schema_version":"1.0"},"canonical_sha256":"3254017a1616f63bd7f38c046583e25bdc1cd58bf5d560947e4b9aaeba889353","source":{"kind":"arxiv","id":"2404.01432","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.01432","created_at":"2026-07-05T08:03:14Z"},{"alias_kind":"arxiv_version","alias_value":"2404.01432v1","created_at":"2026-07-05T08:03:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.01432","created_at":"2026-07-05T08:03:14Z"},{"alias_kind":"pith_short_12","alias_value":"GJKAC6QWC33D","created_at":"2026-07-05T08:03:14Z"},{"alias_kind":"pith_short_16","alias_value":"GJKAC6QWC33DXV7T","created_at":"2026-07-05T08:03:14Z"},{"alias_kind":"pith_short_8","alias_value":"GJKAC6QW","created_at":"2026-07-05T08:03:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:GJKAC6QWC33DXV7TRQCGLA7CLP","target":"record","payload":{"canonical_record":{"source":{"id":"2404.01432","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-04-01T19:07:52Z","cross_cats_sorted":[],"title_canon_sha256":"d15092ec5e19a611694ebcc6e19295eac472ec27094ed0d8dad137d758a1151e","abstract_canon_sha256":"9ed9ffe4f91620a7a99567d01a761c6c8563a07fdfc473c4f6baf2d3ceff6003"},"schema_version":"1.0"},"canonical_sha256":"3254017a1616f63bd7f38c046583e25bdc1cd58bf5d560947e4b9aaeba889353","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:03:14.145484Z","signature_b64":"3dhfYlNnV1Hyb7lKstwbb1RG/faTMLIlDOKad5neYSMV6V4QgpmtR0YqKYoMHgtX/e2ycXX+tugO9X7JbqroAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3254017a1616f63bd7f38c046583e25bdc1cd58bf5d560947e4b9aaeba889353","last_reissued_at":"2026-07-05T08:03:14.144737Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:03:14.144737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.01432","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":"2026-07-05T08:03:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"We79uogqwiXICQDZOHlm7H8fIX1vfHYZcc673YH483y20DENtbTw8H320n9GIS5QPInxsMAhqiiY1KJdNhe2AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T00:46:01.025759Z"},"content_sha256":"5b788391b854d503b2a9c9f6474c50dcba0b14141b066ba0d65b7c40fb57600a","schema_version":"1.0","event_id":"sha256:5b788391b854d503b2a9c9f6474c50dcba0b14141b066ba0d65b7c40fb57600a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:GJKAC6QWC33DXV7TRQCGLA7CLP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Near-Visible Topological Edge States in a Silicon Nitride Platform","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Arka Majumdar, Arnab Manna, Christopher Flower, David Sharp, Hannah Rarick, Mahmoud Jalali Mehrabad, Mohammad Hafezi, Rui Chen","submitted_at":"2024-04-01T19:07:52Z","abstract_excerpt":"Demonstrations of topological photonics have so far largely been confined to infrared wavelengths where imaging technology and access to low-dimensional quantum materials are both limited. Here, we designed and fabricated silicon nitride ring-resonator arrays to demonstrate photonic topological edge states at ~780 nm. We observed edge states corresponding to the integer quantum Hall Hamiltonian with topological protection against fabrication disorder. This demonstration extends the concept of topological edge states to the near-visible regime and paves the way for nonlinear and non-Hermitian t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.01432","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/2404.01432/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":"2026-07-05T08:03:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SV+/+hDD0covoPigcC81FoW/mDf+E4YyXw6rpQgtl4zO5a4RM2Z9zU0KhetuFP8eEyyqVkBDLEH4/uuiRUIkDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T00:46:01.026128Z"},"content_sha256":"df444ba75e6f8058edc9d723fefef7f3a5ca8fe0da747b9319b65b76e04009f8","schema_version":"1.0","event_id":"sha256:df444ba75e6f8058edc9d723fefef7f3a5ca8fe0da747b9319b65b76e04009f8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GJKAC6QWC33DXV7TRQCGLA7CLP/bundle.json","state_url":"https://pith.science/pith/GJKAC6QWC33DXV7TRQCGLA7CLP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GJKAC6QWC33DXV7TRQCGLA7CLP/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":"2026-08-20T00:46:01Z","links":{"resolver":"https://pith.science/pith/GJKAC6QWC33DXV7TRQCGLA7CLP","bundle":"https://pith.science/pith/GJKAC6QWC33DXV7TRQCGLA7CLP/bundle.json","state":"https://pith.science/pith/GJKAC6QWC33DXV7TRQCGLA7CLP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GJKAC6QWC33DXV7TRQCGLA7CLP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:GJKAC6QWC33DXV7TRQCGLA7CLP","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":"9ed9ffe4f91620a7a99567d01a761c6c8563a07fdfc473c4f6baf2d3ceff6003","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-04-01T19:07:52Z","title_canon_sha256":"d15092ec5e19a611694ebcc6e19295eac472ec27094ed0d8dad137d758a1151e"},"schema_version":"1.0","source":{"id":"2404.01432","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.01432","created_at":"2026-07-05T08:03:14Z"},{"alias_kind":"arxiv_version","alias_value":"2404.01432v1","created_at":"2026-07-05T08:03:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.01432","created_at":"2026-07-05T08:03:14Z"},{"alias_kind":"pith_short_12","alias_value":"GJKAC6QWC33D","created_at":"2026-07-05T08:03:14Z"},{"alias_kind":"pith_short_16","alias_value":"GJKAC6QWC33DXV7T","created_at":"2026-07-05T08:03:14Z"},{"alias_kind":"pith_short_8","alias_value":"GJKAC6QW","created_at":"2026-07-05T08:03:14Z"}],"graph_snapshots":[{"event_id":"sha256:df444ba75e6f8058edc9d723fefef7f3a5ca8fe0da747b9319b65b76e04009f8","target":"graph","created_at":"2026-07-05T08:03:14Z","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/2404.01432/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Demonstrations of topological photonics have so far largely been confined to infrared wavelengths where imaging technology and access to low-dimensional quantum materials are both limited. Here, we designed and fabricated silicon nitride ring-resonator arrays to demonstrate photonic topological edge states at ~780 nm. We observed edge states corresponding to the integer quantum Hall Hamiltonian with topological protection against fabrication disorder. This demonstration extends the concept of topological edge states to the near-visible regime and paves the way for nonlinear and non-Hermitian t","authors_text":"Arka Majumdar, Arnab Manna, Christopher Flower, David Sharp, Hannah Rarick, Mahmoud Jalali Mehrabad, Mohammad Hafezi, Rui Chen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-04-01T19:07:52Z","title":"Near-Visible Topological Edge States in a Silicon Nitride Platform"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.01432","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":"sha256:5b788391b854d503b2a9c9f6474c50dcba0b14141b066ba0d65b7c40fb57600a","target":"record","created_at":"2026-07-05T08:03:14Z","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":"9ed9ffe4f91620a7a99567d01a761c6c8563a07fdfc473c4f6baf2d3ceff6003","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2024-04-01T19:07:52Z","title_canon_sha256":"d15092ec5e19a611694ebcc6e19295eac472ec27094ed0d8dad137d758a1151e"},"schema_version":"1.0","source":{"id":"2404.01432","kind":"arxiv","version":1}},"canonical_sha256":"3254017a1616f63bd7f38c046583e25bdc1cd58bf5d560947e4b9aaeba889353","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3254017a1616f63bd7f38c046583e25bdc1cd58bf5d560947e4b9aaeba889353","first_computed_at":"2026-07-05T08:03:14.144737Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:03:14.144737Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3dhfYlNnV1Hyb7lKstwbb1RG/faTMLIlDOKad5neYSMV6V4QgpmtR0YqKYoMHgtX/e2ycXX+tugO9X7JbqroAw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:03:14.145484Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.01432","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5b788391b854d503b2a9c9f6474c50dcba0b14141b066ba0d65b7c40fb57600a","sha256:df444ba75e6f8058edc9d723fefef7f3a5ca8fe0da747b9319b65b76e04009f8"],"state_sha256":"a20829dad24d44f73ca7927aab9662bf271268e40cac12e371786a1f27d01306"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AMc95DM1EIne1nj9JrP3zo5oLzyr6z9MHy2jAxWSAwpkdIVQsjJBNTWgtPVf0eGFx+KnpTqxfJgBW+PReoMKBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T00:46:01.028630Z","bundle_sha256":"5fbaef4b1727fd26ba095b404aefeaf24e134877c7e4943d137921c66100328a"}}