论文标题
Majorana模式的标志泄漏成混合双量子点
Hallmarks of Majorana mode leaking into a hybrid double quantum dot
论文作者
论文摘要
我们研究了双量子点的光谱和传输特性，该量子点横向连接到拓扑超导纳米线，载有Majorana零能量模式。具体而言，我们考虑了一个几何形状，其中外部量子点嵌入外部正常和超导导线之间，形成电路。首先，在不相关的系统的情况下，我们得出了结合状态的分析表达式，并在隧道光谱中讨论了它们的特征。然后，我们通过执行数值重新归一化组计算来探讨强烈相关的量子点的情况，重点是两个量子点上泄漏的Majoragan模式与近距状态之间的相互作用和关系。最后，我们讨论了可行的手段，通过使用基于粒子到孔散射机制的Andreev光谱法实验探测内gap准粒子。
We investigate the spectral and transport properties of a double quantum dot laterally attached to a topological superconducting nanowire, hosting the Majorana zero-energy modes. Specifically, we consider a geometry, in which the outer quantum dot is embedded between the external normal and superconducting leads, forming a circuit. First, we derive analytical expressions for the bound states in the case of an uncorrelated system and discuss their signatures in the tunneling spectroscopy. Then, we explore the case of strongly correlated quantum dots by performing the numerical renormalization group calculations, focusing on the interplay and relationship between the leaking Majorana mode and the Kondo states on both quantum dots. Finally, we discuss feasible means to experimentally probe the in-gap quasiparticles by using the Andreev spectroscopy based on the particle-to-hole scattering mechanism.
