论文标题
通过耗散工程在约瑟夫森系统中的量子隧道加速
Engineering the speedup of quantum tunneling in Josephson systems via dissipation
论文作者
论文摘要
从理论上讲，我们通过量子隧道在受定制耗散影响的系统中通过量子隧穿进行了研究。具体而言，我们研究了当前偏见的约瑟夫森交界处的超导阶段的环境辅助量子隧道。我们认为在量子电路和量子电荷中引起耗散的欧姆电阻。我们发现电荷耗散导致量子逃逸速率的提高。这种效果已经出现在低欧姆状态下，并且在有利于本地化的相位耗散存在下也发生。插入逼真的电路参数，我们解决了其实验可观察性的问题，并讨论了可观察增强速率的合适参数空间。
We theoretically investigate the escape rate occurring via quantum tunneling in a system affected by tailored dissipation. Specifically, we study the environmental assisted quantum tunneling of the superconducting phase in a current-biased Josephson junction. We consider Ohmic resistors inducing dissipation both in the phase and in the charge of the quantum circuit. We find that the charge dissipation leads to an enhancement of the quantum escape rate. This effect appears already in the low Ohmic regime and also occurs in the presence of phase dissipation that favors localization. Inserting realistic circuit parameters, we address the question of its experimental observability and discuss suitable parameter spaces for the observation of the enhanced rate.
