Quantum Dot Architecture Nanodynamics

位置控制半导体量子点（QDs）由于其在量子信息技术和纳米光电子学中的潜在应用而受到全世界的关注。目标是通过在外延生长过程中控制单点或分子的精确位置来创建先进的量子点结构。然而，在实现位置控制III-V量子结构的一个重大限制是我们无法实时观察它们是如何形成的，从而了解如何精确地定制它们的特征。该项目将利用卡迪夫的一种独特的电子显微镜来获得量子点在先进架构中实际形成的第一部实时电影。这将为国家III-V技术中心提供前所未有的反馈，并使我们能够制造出具有最佳位置控制和光学特性的量子点。这些最佳结构将与日立欧洲有限公司进行光学测试，以期将单光子（SP）源大规模集成到量子光子电路和网络中进行商业开发。

Site controlled semiconductor quantum dots (QDs) are the subject of world-wide interest because of their potential use in quantum information technologies and nanoscale optoelectronics. The goal is to create advanced QD architectures by controlling the precise position of single dots or molecules during epitaxial growth. However, a significant limitation in the realisation of site controlled III-V quantum structures is our inability to observe how they form in real-time and hence understand how to precisely tailor their characteristics. This project will utilise a unique electron microscope in Cardiff to obtain the first real-time movies of how QDs actually form in advanced architectures. This will provide unprecedented feedback to the National Centre for III-V Technologies and allow us to fabricate QDs with the best site control and optical properties ever achieved. These optimal structures will be tested optically with a view to commercial exploitation with Hitachi Europe Ltd for the large scale integration of single-photon (SP) sources into quantum photonic circuits and networks.