{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:EYJ77JMGYV4NTNY7AWPABIRLVG","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":"2022fec70478f517fdac2b6390985c6a348bfa41e282756d325e160a046d029c","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-11-30T19:02:51Z","title_canon_sha256":"f87d62540fa9307b3ae87c2562c0c2bdb6aa3a64fcaeafb75c75befa4a226698"},"schema_version":"1.0","source":{"id":"1111.7272","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1111.7272","created_at":"2026-05-18T03:53:20Z"},{"alias_kind":"arxiv_version","alias_value":"1111.7272v2","created_at":"2026-05-18T03:53:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1111.7272","created_at":"2026-05-18T03:53:20Z"},{"alias_kind":"pith_short_12","alias_value":"EYJ77JMGYV4N","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_16","alias_value":"EYJ77JMGYV4NTNY7","created_at":"2026-05-18T12:26:28Z"},{"alias_kind":"pith_short_8","alias_value":"EYJ77JMG","created_at":"2026-05-18T12:26:28Z"}],"graph_snapshots":[{"event_id":"sha256:0b872612b1baf7fd94efbf6e29c42646c405f076ca47afcb1ae2cff0091f236b","target":"graph","created_at":"2026-05-18T03:53:20Z","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":"For many types of superconducting qubits, magnetic flux noise is a source of pure dephasing. Measurements on a representative dc superconducting quantum interference device (SQUID) over a range of temperatures show that $S_\\Phi(f) = A^2/(f/1 \\hbox{Hz})^\\alpha$, where $S_\\Phi$ is the flux noise spectral density, $A$ is of the order of 1 $\\mu\\Phi_0 \\, \\hbox{Hz}^{-1/2}$ and $0.61 \\leq \\alpha \\leq 0.95$; $\\Phi_{0}$ is the flux quantum. For a qubit with an energy level splitting linearly coupled to the applied flux, calculations of the dependence of the pure dephasing time $\\tau_\\phi$ of Ramsey and","authors_text":"A. D. Fefferman, A. Shnirman, C. M\\\"uller, D. S. Golubev, F. C. Wellstood, G. C. Hilton, Gerd Sch\\\"on, H.-M. Cho, John Clarke, J. S. Birenbaum, K. D. Irwin, S. M. Anton, S. R. O'Kelley","cross_cats":["cond-mat.mes-hall","quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-11-30T19:02:51Z","title":"Pure dephasing in flux qubits due to flux noise with spectral density scaling as $1/ f^\\alpha$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1111.7272","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":"sha256:7cc4d4ae888fe6acc5f04e4c0367f989b3382f8572e3fe795ffe9e88e1308d84","target":"record","created_at":"2026-05-18T03:53:20Z","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":"2022fec70478f517fdac2b6390985c6a348bfa41e282756d325e160a046d029c","cross_cats_sorted":["cond-mat.mes-hall","quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-11-30T19:02:51Z","title_canon_sha256":"f87d62540fa9307b3ae87c2562c0c2bdb6aa3a64fcaeafb75c75befa4a226698"},"schema_version":"1.0","source":{"id":"1111.7272","kind":"arxiv","version":2}},"canonical_sha256":"2613ffa586c578d9b71f059e00a22ba9bdf1e49459ab228b1f3b61da9235203b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2613ffa586c578d9b71f059e00a22ba9bdf1e49459ab228b1f3b61da9235203b","first_computed_at":"2026-05-18T03:53:20.115032Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:53:20.115032Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"dWM960M1YSarw2bdR3DjcmUz0IZawInecN/hWIdahLnQ0HrsKuxCipuSEi2n7LuKgc7oWnqq2L6b69sk0RipCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:53:20.115679Z","signed_message":"canonical_sha256_bytes"},"source_id":"1111.7272","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7cc4d4ae888fe6acc5f04e4c0367f989b3382f8572e3fe795ffe9e88e1308d84","sha256:0b872612b1baf7fd94efbf6e29c42646c405f076ca47afcb1ae2cff0091f236b"],"state_sha256":"8c9a61b3d67eeef6b3b7036fdbfb642ba94d25950a8876200a983b60f58300e1"}