Microwave-Induced Cooling of a Superconducting Qubit

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dc.creatorValenzuela, S. O.
dc.creatorOliver, W. D.
dc.creatorBerns, D. M.
dc.creatorBerggren, K. K.
dc.creatorLevitov, L. S.
dc.creatorOrlando, T. P.
dc.date2007-02-08
dc.date.accessioned2026-07-07T09:32:03Z
dc.date.available2026-07-07T09:32:03Z
dc.descriptionWe demonstrated microwave-induced cooling in a superconducting flux qubit. The thermal population in the first-excited state of the qubit is driven to a higher-excited state by way of a sideband transition. Subsequent relaxation into the ground state results in cooling. Effective temperatures as low as Teff~ 3 millikelvin are achieved for bath temperatures Tbath = 30 - 400 millikelvin, a cooling factor between 10 and 100. This demonstration provides an analog to optical cooling of trapped ions and atoms and is generalizable to other solid-state quantum systems. Active cooling of qubits, applied to quantum information science, provides a means for qubit-state preparation with improved fidelity and for suppressing decoherence in multi-qubit systems.
dc.descriptionComments Article plus Supplementary Online Material. 19 pages, 6 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0702190
dc.identifierhttp://arxiv.org/abs/cond-mat/0702190
dc.identifierScience 314, 1589 (2006)
dc.identifierdoi:10.1126/science.1134008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/158674
dc.subjectSuperconductivity
dc.titleMicrowave-Induced Cooling of a Superconducting Qubit
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