基于约瑟夫森结的共振激活轴子探测
Josephson junction-based axion detection through resonant activation
摘要：
讨论了约瑟夫森结上由于约瑟夫森系统与轴子耦合而产生的共振激活现象。我们展示了如何利用这种效应进行轴子检测。从超导态到电阻态的平均转换时间与轴子能量和约瑟夫森等离子体能量之比的非单调行为，具有最小值，我们演示了如何在转换时间的变化，使它有可能检测到的轴子场的存在。提出了一种通过与约瑟夫森系统耦合观测轴子的实验方案。
英文摘要：
We discuss the resonant activation phenomenon on a Josephson junction due to the coupling of the Josephson system with axions. We show how such an effect can be exploited for axion detection. A nonmonotonic behavior, with a minimum, of the mean switching time from the superconducting to the resistive state versus the ratio of the axion energy and the Josephson plasma energy is found. We demonstrate how variations in switching times make it possible to detect the presence of the axion field. An experimental protocol for observing axions through their coupling with a Josephson system is proposed.
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