Center for Emergent Matter Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan.
Sci Rep. 2016 Dec 15;6:39113. doi: 10.1038/srep39113.
A semiconductor quintuple quantum dot with two charge sensors and an additional contact to the center dot from an electron reservoir is fabricated to demonstrate the concept of scalable architecture. This design enables formation of the five dots as confirmed by measurements of the charge states of the three nearest dots to the respective charge sensor. The gate performance of the measured stability diagram is well reproduced by a capacitance model. These results provide an important step towards realizing controllable large scale multiple quantum dot systems.
制造了一个带有两个电荷传感器和一个额外接触到电子储库中心点的半导体五重量子点，以展示可扩展架构的概念。 该设计通过测量三个最近的点到各自电荷传感器的电荷状态来确认五个点的形成。 测量稳定性图的栅极性能通过电容模型得到很好的再现。 这些结果朝着实现可控制的大规模多量子点系统迈出了重要的一步。
