{"paper":{"title":"High coherence hybrid superconducting qubit","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["quant-ph"],"primary_cat":"cond-mat.supr-con","authors_text":"David P. DiVincenzo, George A. Keefe, J.R. Rozen, Mark B. Ketchen, Mary Beth Rothwell, Matthias Steffen, Shwetank Kumar","submitted_at":"2010-03-16T01:14:36Z","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"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.3054","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}