Measurements of 1/ f noise in Josephson junctions at zero voltage: Implications for decoherence in superconducting quantum bits

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dc.creatorMueck, Michael
dc.creatorKorn, Matthias
dc.creatorMugford, C. G. A.
dc.creatorKycia, J. B.
dc.creatorClarke, John
dc.date2005-01-07
dc.date.accessioned2026-07-07T03:03:06Z
dc.date.available2026-07-07T03:03:06Z
dc.descriptionCritical current fluctuations with a 1/ f spectral density (f is frequency) are potentially a limiting source of intrinsic decoherence in superconducting quantum bits (qubits) based on Josephson tunnel junctions. Prior measurements of this noise were made at nonzero voltages whereas qubits are operated in the zero voltage state. We report measurements of 1/ f noise in a dc superconducting quantum interference device first, coupled to a resonant tank circuit and operated in a dispersive mode at zero voltage, and, second, operated conventionally with a current bias in the voltage regime. Both measurements yield essentially the same magnitude of critical current 1/ f noise.
dc.description3 pages, 2 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0501153
dc.identifierhttp://arxiv.org/abs/cond-mat/0501153
dc.identifierAppl. Phys. Lett. 86, 012510 (2005)
dc.identifierdoi:10.1063/1.1846157
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25631
dc.subjectSuperconductivity
dc.subjectMesoscale and Nanoscale Physics
dc.titleMeasurements of 1/ f noise in Josephson junctions at zero voltage: Implications for decoherence in superconducting quantum bits
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