Frequency(Stochastic) Resonance and Stochastic Resonance for a Superconducting Junctions' Device

In this paper, we investigate a Josephson-junction device with dichotomous resistance or a special SQUID(superconducting quantum interference device). It is shown that frequency(stochastic) resonance and stochastic resonance can appear for some suitably selected parameters' values of the device respectively. Our results can provide some insights for the investigation of the SQUID response to the signal(including the input alternating current, the added alternating voltage, the vertically added alternating magnetic field, and the detected(electric-magnetic) temporal-periodic signal).