Quantum-optical spectroscopy of semiconductor nanostructures

传统的激光光谱学是基于控制和表征光源/发射的强度、持续时间和相位。除了这些经典的方面，激光场还包含固有的波动，这必然导致有趣的量子光学特征。在本项目中，我们将研究如何定量控制和系统利用这些量子效应，以扩大和补充经典半导体光谱学的范围。特别是，我们将分析这种量子光谱学如何以及在多大程度上可以用于光学生成物质状态的优越实验表征。此外，我们将研究新的方案，以产生特定的多体构型与期望的相关性质，如空间长程有序或减少库仑减相。在技术上，我们将量子光学方法与我们的相关展开方法结合起来，同时处理半导体中的多体和量子光学效应。除了系统地计算多体态及其相互作用外，我们还将描述重发射光的量子统计特性。我们将与德国和美国的团队合作，进行定量实验，旨在测试理论预测的相关方面。

Traditional laser spectroscopy is based on controlling and characterizing intensity, duration, and phase of the light source/emission. Besides these classical aspects, laser fields also contain intrinsic fluctuations which inevitably lead to intriguing quantum-optical features. In this project, we will investigate how the quantitative control and systematic utilization of these quantum effects can be applied to broaden and complement the scope of classical semiconductor spectroscopy. In particular, we will analyze how and to which degree this quantum-optical spectroscopy can be used for the superior experimental characterization of the optically generated matter states. Furthermore, we will investigate new schemes to generate particular many-body configurations with desired correlation properties, such as spatial long-range order or reduced Coulombic dephasing. Technically, we combine quantum-optical methodologies with our correlation-expansion method to simultaneously treat the many-body and quantum-optical effects in semiconductors. Besides the systematic calculation of the many-body states and their interactions, we will also characterize the quantum statistics of the re-emitted light. We will collaborate with groups in Germany and USA performing quantitative experiments designed to test relevant aspects of the theoretical predictions.