Resonant response drives sensitivity of Josephson escape detector
Artikel i vetenskaplig tidskrift, 2021

The Josephson junction as a switching detector of weak signals is investigated in presence of noise in the frame of rotating pendulum model. The parameter range, where the detection can be more efficient, is found. It has been demonstrated, that with decrease of the signal power the double minima of the mean switching time and the standard deviation are transformed into a single minimum, which corresponds to interplay between noise suppression and resonant activation regimes. The resonant nature of escape allows to detect weak signals, whose amplitudes are weaker than the difference between critical current and bias current of a Josephson junction. With decrease of damping an efficient detection becomes possible even at subharmonics of the resonance frequency.

Resonant response

Noise-induced escapes

Resonant activation

Josephson escape detector

Författare

Anton A. Yablokov

Russian Academy of Sciences

Nizhny Novgorod State Technical University

E. I. Glushkov

Nizhny Novgorod State Technical University

Lobachevsky University

Russian Academy of Sciences

A. L. Pankratov

Lobachevsky University

Nizhny Novgorod State Technical University

Russian Academy of Sciences

A. V. Gordeeva

Russian Academy of Sciences

Nizhny Novgorod State Technical University

Leonid Kuzmin

Nizhny Novgorod State Technical University

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

E. Il'Ichev

Leibniz-Institut Für Photonische Technologien E.V.

Novosibirsk State Technical University

Chaos, Solitons and Fractals

0960-0779 (ISSN)

Vol. 148 111058

Ämneskategorier

Medicinsk laboratorie- och mätteknik

Signalbehandling

Annan elektroteknik och elektronik

DOI

10.1016/j.chaos.2021.111058

Mer information

Senast uppdaterat

2021-06-21