标题： 二维隧穿耦合量子点的空间映射与操控 显示英文标题

标题： Spatial mapping and manipulation of two tunnel-coupled quantum dots

摘要： 扫描力显微镜的金属探针在300 mK下操作，用于在通过GaAs/AlGaAs异质结构中的局部阳极氧化定义的完全可控制的双量子点上局部诱导电势。 使用扫描门技术，我们记录了在量子点上不同电子数（即不同量子态）时通过样品的电流的空间图像。 由于电流图的空间分辨率，我们能够确定单个量子点的空间位置，并研究由于单个栅极施加的电压引起的它们的明显相对位移。 显示英文摘要

摘要： The metallic tip of a scanning force microscope operated at 300 mK is used to locally induce a potential in a fully controllable double quantum dot defined via local anodic oxidation in a GaAs/AlGaAs heterostructure. Using scanning gate techniques we record spatial images of the current through the sample for different numbers of electrons on the quantum dots (i.e., for different quantum states). Owing to the spatial resolution of current maps, we are able to determine the spatial position of the individual quantum dots, and investigate their apparent relative shifts due to the voltage applied to a single gate.