论文标题
在现场超导配对的情况下，淬灭类似Fano的共振的动力学
Quench dynamics of Fano-like resonances in the presence of the on-dot superconducting pairing
论文作者
论文摘要
我们探讨了由T形几何形状中金属和超导导线之间嵌入的双量子点组成的系统的电子动力学。在纳米镜系统中，可以通过不同的路径实现电极之间的电子传递，干扰效应起着重要作用。对于所选几何形状中的双量子点系统，电子的干扰通过界面量子点在电极之间传递，散布在侧点上的电子会导致类似Fano的干扰。如果此类系统还与超导电极耦合在一起，以及众所周知的Fano共振，则将出现额外的共振在费米水平的另一侧。在最近的工作中[Sci。众议员10，2881（2020）]，我们表明这种共振仅是由于非散射电子与散射的电子的局部配对而发生的。在这项工作中，考虑到淬灭动态，我们探索形成每一种共振需要多少时间。特别是（i）我们分析子系统之间的电荷振荡； （ii）我们估计每个共振在突然变化的互连连接时达到稳定平衡所需的时间； （iii）我们讨论了针对相似体系结构实验的典型能量和时间尺度。
We explore the electron dynamics of a system composed of double quantum dot embedded between metallic and superconducting leads in a T-shape geometry. In nanoscopic systems, where electron transfer between electrodes can be realized via different paths, interference effects play an important role. For double quantum dot system in the chosen geometry, interference of electrons transferred between electrodes via the interfacial quantum dot and electrons scattered on the side dot gives rise to Fano-like interference. If such a system is additionally coupled to a superconducting electrode, together with the well-understood Fano resonance an additional resonance appears on the opposite side of the Fermi level. In the recent work [Sci. Rep. 10, 2881 (2020)], we showed that this resonance occurs solely as a result of the local pairing of non-scattered electrons with scattered ones. In this work, considering the quench dynamics, we explore how much time is required for formation of each of these resonances. In particular, (i) we analyze the charge oscillations between subsystems; (ii) we estimate the time required for each resonance to achieve stable equilibrium upon an abrupt change of interdot connection; (iii) we discuss a typical energy and time scales for experiments on similar architectures.
