Thermal Escape from a Metastable State in Periodically Driven Josephson   Junctions
  Resonant activation and noise-enhanced stability were observed in an underdamped real physical system, i.e., Josephson tunnel junctions. With a weak sinusoidal driving force applied, the thermal activated escape from a potential well underwent resonance-like behavior as a function of the driving frequency. The resonance also crucially depended on the initial condition of the system. Numerical simulations showed good agreement with the experimental results. 
Guozhu Sun, Jian Chen, Weiwei Xu, Zhengming Ji, Lin Kang, Peiheng Wu,   Guangfeng Mao, Ning Dong, Yang Yu, and Dingyu Xing