Anomalous thermal escape in Josephson systems perturbed by microwaves

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dc.creatorGrønbech-Jensen, N.
dc.creatorCastellano, M. G.
dc.creatorChiarello, F.
dc.creatorCirillo, M.
dc.creatorCosmelli, C.
dc.creatorMerlo, V.
dc.creatorRusso, R.
dc.creatorTorrioli, G.
dc.date2004-12-26
dc.date.accessioned2026-07-07T08:25:55Z
dc.date.available2026-07-07T08:25:55Z
dc.descriptionWe investigate, by experiments and numerical simulations, thermal activation processes of Josephson tunnel junctions in the presence of microwave radiation. When the applied signal resonates with the Josephson plasma frequency oscillations, the switching current may become multi-valued temperature ranges both below and above the the classical to quantum crossover temperature. Switching current distributions are obtained both experimentally and numerically at temperatures both near and far above the quantum crossover temperature. Plots of the switching currents traced as a function of the applied signal frequency show very good agreement with a simple anharmonic theory for Josephson resonance frequency as a function of bias current. Throughout, experimental results and direct numerical simulations of the corresponding thermally driven classical Josephson junction model show very good agreement.
dc.description10 pages -- to be published in proceedings from "Macroscopic Quantum Coherence and Computing", June 7-10, 2004, Naples, Italy
dc.identifierhttps://arxiv.org/abs/cond-mat/0412692
dc.identifierhttp://arxiv.org/abs/cond-mat/0412692
dc.identifierin "Quantum Computing in Solid State Systems", eds. B.Ruggiero, P.Delsing, C.Granata, Y.Pashkin, and P.Silvestrini; p.111 (Springer, 2006). ISBN-10: 0-387-26332-2
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/136781
dc.subjectStatistical Mechanics
dc.subjectSuperconductivity
dc.titleAnomalous thermal escape in Josephson systems perturbed by microwaves
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