Resonance fluorescence and squeezing from semiconductor nanostructures

该研究项目旨在全面了解半导体发出的光的量子特性。我们将集中讨论用亚泊松统计和压缩态对光的实验证明。在第一步中，我们将使用标准同差技术研究单量子阱中激子的镜面反射中压缩态的可能性。作为光谱干涉测量和相关测量相结合的同差相关光谱的建立将使我们能够研究低量子效率的系统，这是迄今为止不可能的。我们专注于测量量子阱激子和最具挑战性的单量子点的共振发射。从这些研究开始，我们希望实现专门设计的半导体纳米结构，可以系统地增强非经典效应。在未来，这些研究将为技术应用开辟新的可能性。

This research project aims at a thorough understanding of the quantum properties of the light emitted from semiconductors. We will concentrate on the experimental prove of light with subPoissonian statistics and in squeezed states. In a first step we will investigate the possibility of squeezed states in the specular reflection from excitons in a single quantum well using standard homodyne techniques. The setup of homodyne correlation spectroscopy as a combination of spectral interferometry and correlation measurements will allow us to investigate systems with low quantum efficiency, not possible up to now. We concentrate on measurements of the resonant emission from quantum well excitons and most challenging, from single quantum dots. Starting from these investigations, we want to realize specially designed semiconductor nanostructures which allow to enhance the non-classical effects systematically. In the future, these investigations will open up new possibilities for technical applications.