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Davidovik","work_id":"23a02995-b697-446a-93c0-4b214106a05b","year":2000}],"snapshot_sha256":"d16aac0cd698f1fc05ee2fc845f38b513e9baa5cacb68f08a4dc6e0dbfd18fb8"},"source":{"id":"2605.13571","kind":"arxiv","version":1},"verdict":{"created_at":"2026-05-14T18:14:10.937424Z","id":"04dad82e-84ba-4894-8877-ae66808261c6","model_set":{"reader":"grok-4.3"},"one_line_summary":"An on-chip cryogenic microwave frequency comb is produced via electric-field-induced phase modulation in quantum paraelectric SrTiO3 inside a superconducting resonator.","pipeline_version":"pith-pipeline@v0.9.0","pith_extraction_headline":"A superconducting cavity on SrTiO3 generates tunable cryogenic microwave frequency combs through field-induced phase modulation.","strongest_claim":"Our device, utilizing a superconducting microwave cavity, generating the frequency comb via cavity phase modulation enabled by the field-induced effective χ(2) of SrTiO3.","weakest_assumption":"That the Pockels-like effect and field-induced effective second-order nonlinearity in the quantum paraelectric phase of SrTiO3 are sufficient to produce a usable frequency comb at cryogenic temperatures with low electrical power and without additional optical components."}},"verdict_id":"04dad82e-84ba-4894-8877-ae66808261c6"}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:48b36483a15601d68b99b0acf1c2e0663ed8cfbf08d14900b338a1237baa202a","target":"record","created_at":"2026-05-18T02:44:23Z","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":"4fdc0bc8c17964985560db5e403f17ac1548e09b230390482f157596e20fab41","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2026-05-13T14:08:36Z","title_canon_sha256":"3cee768505e37be2f0533ae073c3c371e033cccd94609de66b90fbba5660e5b9"},"schema_version":"1.0","source":{"id":"2605.13571","kind":"arxiv","version":1}},"canonical_sha256":"cdb3b1d9f86ff6d2d0d10c70a60119f7f25a8a5a05319da74447ae6a9ed3712b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cdb3b1d9f86ff6d2d0d10c70a60119f7f25a8a5a05319da74447ae6a9ed3712b","first_computed_at":"2026-05-18T02:44:23.365458Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:44:23.365458Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Y6nGq1GI7wREQG3cFKSotY9mcK528DVURWc+0rsxHg+GueGpV/fIPYOW+En/hul7WLhzd0rK0wI2oB4zI0TJAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:44:23.365975Z","signed_message":"canonical_sha256_bytes"},"source_id":"2605.13571","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:48b36483a15601d68b99b0acf1c2e0663ed8cfbf08d14900b338a1237baa202a","sha256:aad6e23ac35adf95e61855a6162b5233812a6839803b01096774df10fb8c3b39","sha256:50d0e925426a68a4ee0b7aa68895cc586bf90946db1381f6b3a2cb5f9f36f997"],"state_sha256":"137e81ae12fdef619acb9a7e0c845c7f1018458000c2b095b012736321d3714c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4KZW4d4zTC1+Vyc8W+MVFt5hgIlesFcJxCslc1NAhCND2vt5hd0Kf4WWM5z5TPMD3oL+AjLQufkXTto4w5L+BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T10:26:07.842184Z","bundle_sha256":"7ee939658ff42f7925583a154146e555f4ed0782d3e4e1bfeaf62f3b695e5837"}}