论文标题
接近双量子点的传输特性
Transport properties of proximitized double quantum dots
论文作者
论文摘要
我们研究了与金属和超导导管耦合的双量子点的子频谱和传输特性。两个量子点与超导铅的耦合均通过Andreev反射过程在两个量子点中诱导非本地配对。此外，我们将两个库珀对隧穿的通道进入超导铅。在这样的系统中，可以直接隧穿过程（通过两个点之一）或交叉隧道过程（同时通过两个量子点）。我们考虑了Andreev透射率对次点隧道幅度的依赖性以及量子点和超导铅之间的耦合。我们还考虑线性Andreev电导光谱中的干涉型Fano型线形状的发生。
We study the sub-gap spectrum and the transport properties of a double quantum dot coupled to metallic and superconducting leads. The coupling of both quantum dots to the superconducting lead induces a non-local pairing in both quantum dots by the Andreev reflection processes. Additionally, we obtain two channels of Cooper pair tunneling into a superconducting lead. In such a system, the direct tunneling process (by one of two dots) or the crossed tunneling process (by both quantum dots at the same time) is possible. We consider the dependence of the Andreev transmittance on an inter-dot tunneling amplitude and the coupling between a quantum dot and the superconducting lead. We also consider the occurrence of interferometric Fano-type line shapes in the linear Andreev conductance spectra.
