Noise effects on a birhythmic Josephson junction coupled to a resonator

R. Yamapi; G. Filatrella

doi:10.1103/PhysRevE.89.052905

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Noise effects on a birhythmic Josephson junction coupled to a resonator

R. Yamapi, G. Filatrella

DOI 10.1103/PhysRevE.89.052905 · Physical Review E

T1

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Abstract

We study the effect of noise on a Josephson junction that, coupled to a linear RLC resonator, can oscillate at two frequencies. To establish the global stability of the attractors, we estimate the position of the separatrix, essential information to establish the stability of the attractor for this multidimensional system, from the analysis of the mean first passage time. We find that the frequency locked to the resonator is most stable at low bias and less stable at high bias, where the resonator exhibits the largest oscillations. The change in the birhythmic region is dramatic for the effective barrier changes of an order of magnitude and the corresponding lifetime of about seven decades.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown