SQUID棘轮：动力学定域中跃迁的统计
SQUID ratchet: Statistics of transitions in dynamical localization
摘要：
本文研究了在热噪声驱动下，外加恒定磁通量的交流电流作用下，非对称超导量子干涉器件（SQUID）相空间的某些区域的占据.热激活的状态之间的转换，反映三个确定性的吸引子进行了分析，在该制度的噪声引起的动态本地化的约瑟夫森相速度，即有一个温度区间中的电压保持在一个状态的条件概率是非常接近一。这种现象的影响上的直流电压降的SQUID进行了讨论。我们检测到出现的幂律尾巴的约瑟夫森相速度的停留时间概率分布，并讨论了热噪声引起的动力学本地化的对称性破缺的作用。这一现象说明了如何通过随机性本身从随机性中提取出类似决定论的行为。
英文摘要：
We study occupation of certain regions of phase space of an asymmetric superconducting quantum interference device (SQUID) driven by thermal noise, subjected to an external ac current and threaded by a constant magnetic flux. Thermally activated transitions between the states which reflect three deterministic attractors are analyzed in the regime of the noise induced dynamical localization of the Josephson phase velocity, i.e. there is a temperature interval in which the conditional probability of the voltage to remain in one of the states is very close to one. Implications of this phenomenon on the dc voltage drop across the SQUID are discussed. We detect the emergence of the power law tails in a residence time probability distribution of the Josephson phase velocity and discuss the role of symmetry breaking in dynamical localization induced by thermal noise. This phenomenon illustrates how deterministic-like behaviour may be extracted from randomness by stochasticity itself.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
