{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:HU3UBYTX6SGHQC6SSOZXZYSAIQ","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":"c9fca2f7fce5b81c2399cbadd3d194b2c19eaaf4622b6fb6cbb2a7c3c93eab62","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-01-26T22:26:24Z","title_canon_sha256":"c6b0b548295fe87ed38592428c85a0a7b8320a829919d5a3d742a1196b309e8c"},"schema_version":"1.0","source":{"id":"1201.5665","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1201.5665","created_at":"2026-05-18T03:54:16Z"},{"alias_kind":"arxiv_version","alias_value":"1201.5665v2","created_at":"2026-05-18T03:54:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1201.5665","created_at":"2026-05-18T03:54:16Z"},{"alias_kind":"pith_short_12","alias_value":"HU3UBYTX6SGH","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"HU3UBYTX6SGHQC6S","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"HU3UBYTX","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:ab3cda73d21450ac635d4b6dac03dd131c29ac3206494506897ee8a7c7fc388f","target":"graph","created_at":"2026-05-18T03:54:16Z","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":"We report a direct measurement of the low-frequency noise spectrum in a superconducting flux qubit. Our method uses the noise sensitivity of a free-induction Ramsey interference experiment, comprising free evolution in the presence of noise for a fixed period of time followed by single-shot qubit-state measurement. Repeating this procedure enables Fourier-transform noise spectroscopy with access to frequencies up to the achievable repetition rate, a regime relevant to dephasing in ensemble-averaged time-domain measurements such as Ramsey interferometry. Rotating the qubit's quantization axis a","authors_text":"David G. Cory, Fei Yan, Fumiki Yoshihara, Jaw-Shen Tsai, Jonas Bylander, Khalil Harrabi, Simon Gustavsson, Terry P.Orlando, William D. Oliver, Yasunobu Nakamura","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-01-26T22:26:24Z","title":"Spectroscopy of low-frequency noise and its temperature dependence in a superconducting qubit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1201.5665","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":"sha256:8258c93f371e2bc5507de704fb5688438b01f290a53511b73a32e51606caaf74","target":"record","created_at":"2026-05-18T03:54:16Z","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":"c9fca2f7fce5b81c2399cbadd3d194b2c19eaaf4622b6fb6cbb2a7c3c93eab62","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2012-01-26T22:26:24Z","title_canon_sha256":"c6b0b548295fe87ed38592428c85a0a7b8320a829919d5a3d742a1196b309e8c"},"schema_version":"1.0","source":{"id":"1201.5665","kind":"arxiv","version":2}},"canonical_sha256":"3d3740e277f48c780bd293b37ce2404403b62b4e3c334914ef8d5bbb179b9734","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d3740e277f48c780bd293b37ce2404403b62b4e3c334914ef8d5bbb179b9734","first_computed_at":"2026-05-18T03:54:16.579301Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:54:16.579301Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TgBPHEWQQB0HKIwkEcJeMhNNo/rJXKCKo0dvhIhtTlmRIPvEO+MRVaLD9pp19h07+0WH16FGeHJbBkYQq8EOBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:54:16.579746Z","signed_message":"canonical_sha256_bytes"},"source_id":"1201.5665","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8258c93f371e2bc5507de704fb5688438b01f290a53511b73a32e51606caaf74","sha256:ab3cda73d21450ac635d4b6dac03dd131c29ac3206494506897ee8a7c7fc388f"],"state_sha256":"eeb48d1a71158c58d9bf298da3059c826304e1b6695120c5988a2fb32679a13a"}