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- W3111569640 abstract "We propose to characterize L'evy-distributed stochastic fluctuations through the measurement of the average voltage drop across a current-biased Josephson junction. We show that the noise induced switching process in the Josephson washboard potential can be exploited to reveal and characterize L'evy fluctuations, also if embedded in a thermal noisy background. The measurement of the average voltage drop as a function of the noise intensity allows to infer the value of the stability index that characterizes L'evy-distributed fluctuations. An analytical estimate of the average velocity in the case of a L'evy-driven escape process from a metastable state well agrees with the numerical calculation of the average voltage drop across the junction. The best performances are reached at small bias currents and low temperatures, emph{i.e.}, when both thermally activated and quantum tunneling switching processes can be neglected. The effects discussed in this work pave the way toward an effective and reliable method to characterize L'evy components eventually present in an unknown noisy signal." @default.
- W3111569640 created "2020-12-21" @default.
- W3111569640 creator A5005557441 @default.
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- W3111569640 creator A5025284384 @default.
- W3111569640 creator A5057756312 @default.
- W3111569640 creator A5071742429 @default.
- W3111569640 date "2020-12-07" @default.
- W3111569640 modified "2023-10-10" @default.
- W3111569640 title "Voltage drop across Josephson junctions for Lévy noise detection" @default.
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