Detection of small single-cycle signals by stochastic resonance using a bistable superconducting quantum interference device

@article{Sun2015DetectionOS,
  title={Detection of small single-cycle signals by stochastic resonance using a bistable superconducting quantum interference device},
  author={Guozhu Sun and Jiquan Zhai and Xueda Wen and Yang Yu and Lin Kang and Weiwei Xu and Jian Chen and Peiheng Wu and Siyuan Han},
  journal={arXiv: Mesoscale and Nanoscale Physics},
  year={2015}
}
We propose and experimentally demonstrate detecting small single-cycle and few-cycle signals by using the symmetric double-well potential of a radio frequency superconducting quantum interference device (rf-SQUID). We show that the response of this bistable system to single- and few-cycle signals has a non-monotonic dependence on the noise strength. The response, measured by the probability of transition from initial potential well to the opposite one, becomes maximum when the noise-induced… 
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