Górski G, Wójcik K P, Barański J, Weymann I, Domański T
Institute of Physics, College of Natural Sciences, University of Rzeszów, 35-310, Rzeszów, Poland.
Institute of Molecular Physics, Polish Academy of Sciences, 60-179, Poznań, Poland.
Sci Rep. 2024 Jun 15;14(1):13848. doi: 10.1038/s41598-024-64578-4.
We study the quasiparticle states and nonlocal correlations of a hybrid structure, comprising two quantum dots interconnected through a short-length topological superconducting nanowire hosting overlaping Majorana modes. We show that the hybridization between different components of this setup gives rise to the emergence of molecular states, which are responsible for nonlocal correlations. We inspect the resulting energy structure, focusing on the inter-dependence between the quasiparticles of individual quantum dots. We predict the existence of nonlocal effects, which could be accessed and probed by crossed Andreev reflection spectroscopy. Our study would be relevant to a recent experimental realization of the minimal Kitaev model [T. Dvir et al., Nature 614, 445 (2023) ], by considering its hybrid structure with side-attached quantum dots.
我们研究了一种混合结构的准粒子态和非局域关联，该混合结构由两个通过承载重叠马约拉纳模式的短长度拓扑超导纳米线互连的量子点组成。我们表明，该装置不同组件之间的杂化导致了分子态的出现，而分子态是产生非局域关联的原因。我们研究了由此产生的能量结构，重点关注各个量子点的准粒子之间的相互依赖性。我们预测了非局域效应的存在，这种效应可以通过交叉安德烈夫反射光谱法来探测。考虑到其与侧边附着量子点的混合结构，我们的研究与最近对最小基塔耶夫模型的实验实现 [T. Dvir 等人，《自然》614, 445 (2023)] 相关。
