Title :
Noise-Induced Hopping in an RF SQUID
Author :
Jiquan Zhai ; Zhican Du ; Yu Zhou ; Jianxin Shi ; Weiwei Xu ; Guozhu Sun ; Lin Kang ; Jian Chen ; Peiheng Wu
Author_Institution :
Res. Inst. of Supercond. Electron., Nanjing Univ., Nanjing, China
Abstract :
An RF superconducting quantum interference device (RF SQUID), which is an important bistable system, has attracted much attention for its important applications in nonlinear fields. With different potential shapes at 20 mK, we perform detailed research on the relationship between the probability of the phase particle in the left potential well (PL) of an RF SQUID and the external noise intensity (D), which provides a method to identify the symmetry of any tunable bistable systems. A qualitative model is proposed to understand the physical process, and the numerical results are well consistent with the experimental results.
Keywords :
SQUIDs; superconducting device noise; RF superconducting quantum interference device; external noise intensity; left potential well; noise-induced hopping; nonlinear fields; phase particle probability; physical process; potential shapes; qualitative model; temperature 20 mK; tunable bistable system symmetry; Noise; Physics; Potential well; SQUIDs; Shape; Stochastic resonance; Trajectory; Double well; noise-induced hopping; radio-frequency superconducting quantum interference device (RF SQUID); symmetry of potential well;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2014.2359766
