Feedback and rate asymmetry of the Josephson junction noise detector
D. F. Urban, Hermann Grabert
DOI 10.1103/PhysRevB.79.113102 · Physical Review B
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Abstract
The Josephson junction noise detector measures the skewness of non-Gaussian noise via the asymmetry of the rate of escape from the zero-voltage state upon reversal of the bias current. The feedback of this detector on the noise generating device is investigated in detail. Concise predictions are made for a second Josephson junction as noise generating device. The strong nonlinearity of this component implies particularly strong feedback effects, including a change in sign of the rate asymmetry as the applied voltage approaches twice the superconducting gap.
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