{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:YWECI6A6CD7BJZECSZCDCTSMDP","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":"0e1280653adb8838fe5eb888ff9af3f2c63311e5a8e52208b5d429e718fb27a2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"physics.optics","submitted_at":"2013-12-18T18:11:56Z","title_canon_sha256":"2f815543038921775e2df610a5da552c45a577d4880c2a00903f22f941d73f10"},"schema_version":"1.0","source":{"id":"1312.5252","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.5252","created_at":"2026-05-18T01:35:52Z"},{"alias_kind":"arxiv_version","alias_value":"1312.5252v1","created_at":"2026-05-18T01:35:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.5252","created_at":"2026-05-18T01:35:52Z"},{"alias_kind":"pith_short_12","alias_value":"YWECI6A6CD7B","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"YWECI6A6CD7BJZEC","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"YWECI6A6","created_at":"2026-05-18T12:28:09Z"}],"graph_snapshots":[{"event_id":"sha256:0b7396561bcc53dbafc17351ad606dc16573574301e77d92535b230b3cba58e6","target":"graph","created_at":"2026-05-18T01:35:52Z","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":"Resistance thermometry provides a time-tested method for taking temperature measurements. However, fundamental limits to resistance-based approaches has produced considerable interest in developing photonic temperature sensors to leverage advances in frequency metrology and to achieve greater mechanical and environmental stability. Here we show that silicon-based optical ring resonator devices can resolve temperature differences of 1 mK using the traditional wavelength scanning methodology. An even lower noise floor of 80 microkelvin for measuring temperature difference is achieved in the side","authors_text":"G. F. Strouse, Haitan Xu, J. Fan, J. M. Taylor, Mohammad Hafezi, Zeeshan Ahmed","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"physics.optics","submitted_at":"2013-12-18T18:11:56Z","title":"Ultra-Sensitive Chip-Based Photonic Temperature Sensor Using Ring Resonator Structures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.5252","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":"sha256:8f441e4d9c2c4df8910028fd7d6507f0ad1c4139e956e80ede15e9c9d5f37baf","target":"record","created_at":"2026-05-18T01:35:52Z","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":"0e1280653adb8838fe5eb888ff9af3f2c63311e5a8e52208b5d429e718fb27a2","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/publicdomain/","primary_cat":"physics.optics","submitted_at":"2013-12-18T18:11:56Z","title_canon_sha256":"2f815543038921775e2df610a5da552c45a577d4880c2a00903f22f941d73f10"},"schema_version":"1.0","source":{"id":"1312.5252","kind":"arxiv","version":1}},"canonical_sha256":"c58824781e10fe14e4829644314e4c1be24319d70f9448c76e35a74a4b6898a4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c58824781e10fe14e4829644314e4c1be24319d70f9448c76e35a74a4b6898a4","first_computed_at":"2026-05-18T01:35:52.300895Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:52.300895Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/7g+FPhg5UG5xhG9qQDXEGPOHqBGEJFnRznV8CK3b1o6wCOerOyLHpAIlUYZi5/qqg/MjoCjN2r1nCAp5gPkCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:52.301618Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.5252","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8f441e4d9c2c4df8910028fd7d6507f0ad1c4139e956e80ede15e9c9d5f37baf","sha256:0b7396561bcc53dbafc17351ad606dc16573574301e77d92535b230b3cba58e6"],"state_sha256":"a7b30a8ca15dc50012b26c1a7044ae9497420db37e563381b188e2c629d23e33"}