{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:TDAYAEWR3BAKOVKH6NVQJKWAPI","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":"738be39e8c14ae939867778891dd09d4e2430166243cd6adef82c9b15df64b0c","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-03-16T01:14:36Z","title_canon_sha256":"9ebecd598e73a6e30d53366ea649c964be9f76cb2e0d6f0571b7b00c28018ae8"},"schema_version":"1.0","source":{"id":"1003.3054","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1003.3054","created_at":"2026-05-18T02:08:33Z"},{"alias_kind":"arxiv_version","alias_value":"1003.3054v1","created_at":"2026-05-18T02:08:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1003.3054","created_at":"2026-05-18T02:08:33Z"},{"alias_kind":"pith_short_12","alias_value":"TDAYAEWR3BAK","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_16","alias_value":"TDAYAEWR3BAKOVKH","created_at":"2026-05-18T12:26:13Z"},{"alias_kind":"pith_short_8","alias_value":"TDAYAEWR","created_at":"2026-05-18T12:26:13Z"}],"graph_snapshots":[{"event_id":"sha256:ad7d83c948d0f850cae5030588f763f5f88029c95861369061a9100f6c830942","target":"graph","created_at":"2026-05-18T02:08:33Z","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 measure the coherence of a new superconducting qubit, the {\\em low-impedance flux qubit}, finding $T_2^* \\sim T_1 \\sim 1.5\\mu$s. It is a three-junction flux qubit, but the ratio of junction critical currents is chosen to make the qubit's potential have a single well form.  The low impedance of its large shunting capacitance protects it from decoherence.  This qubit has a moderate anharmonicity, whose sign is reversed compared with all other popular qubit designs.  The qubit is capacitively coupled to a high-Q resonator in a $\\lambda/2$ configuration, which permits the qubit's state to be re","authors_text":"David P. DiVincenzo, George A. Keefe, J.R. Rozen, Mark B. Ketchen, Mary Beth Rothwell, Matthias Steffen, Shwetank Kumar","cross_cats":["quant-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-03-16T01:14:36Z","title":"High coherence hybrid superconducting qubit"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.3054","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":"sha256:7a76e2e95acc0d1267a2d0c6c4d712fa332834a88179f02bea3ef0b90f276856","target":"record","created_at":"2026-05-18T02:08:33Z","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":"738be39e8c14ae939867778891dd09d4e2430166243cd6adef82c9b15df64b0c","cross_cats_sorted":["quant-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2010-03-16T01:14:36Z","title_canon_sha256":"9ebecd598e73a6e30d53366ea649c964be9f76cb2e0d6f0571b7b00c28018ae8"},"schema_version":"1.0","source":{"id":"1003.3054","kind":"arxiv","version":1}},"canonical_sha256":"98c18012d1d840a75547f36b04aac07a0d329e5301bdd40646ca1af5bade61e3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"98c18012d1d840a75547f36b04aac07a0d329e5301bdd40646ca1af5bade61e3","first_computed_at":"2026-05-18T02:08:33.498742Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:08:33.498742Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Od7qwfjf+6zGofzqJTUbH2Ej05X+d2E3EP97fViaqTsM3yihmSZpYxslqKw7mxtnV3XnoJFfiKqscA3iIqpkCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:08:33.499532Z","signed_message":"canonical_sha256_bytes"},"source_id":"1003.3054","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7a76e2e95acc0d1267a2d0c6c4d712fa332834a88179f02bea3ef0b90f276856","sha256:ad7d83c948d0f850cae5030588f763f5f88029c95861369061a9100f6c830942"],"state_sha256":"b8f0d7a1ec226d8a1ddcdb9c975af0f279c10133af682d84260533bc62d19b9d"}