Quantenoptik an photonischen Kristallen

光与物质之间的相互作用是基础科学和尖端技术的核心。光子晶体是纳米制造的材料结构，其允许以前所未有的多功能性设计光的传播。我们建议通过发展与近场显微镜和单粒子操纵相关的理论方法来研究光子晶体的量子光学。该项目旨在提供计算纳米结构中光场的工具，提高对复杂环境中光-物质相互作用的理论理解，并探索光学微陷阱在量子信息处理中的可能应用。主要研究了以下几个问题：（1）利用掺杂分子发射体的扫描近场探针，以亚波长的空间分辨率对晶体附近的光场进行成像;（2）单粒子与局限于缺陷处的光模的相互作用，这是腔量子电动力学的理想环境;（iii）缺陷模与活性介质的组合，以实现集成的低阈值微激光器。该项目将与实验和理论小组密切联系，特别是苏黎世联邦理工学院的V. Sandoghdar小组。

The interaction between light and matter lies at the heart of both fundamental science and cutting-edge technology. Photonic crystals are nanofabricated material structures that allow to engineer the propagation of light with unprecented versatility. We propose to investigate the quantum optics of photonic crystals by developing theoretical methods related to near field microscopy and single-particle manipulation. The project aims at providing tools to compute the light field in nanofabricated structures, at improving the theoretical understanding of the light-matter interaction in a complex environment, and at exploring possible applications of optical microtraps for quantum information processing. The following key problems will be dealt with: (i) imaging the light field close to the crystal with sub-wavelength spatial resolution, using a scanning nearfield probe doped with a molecular emitter; (ii) the interaction of single particles with light modes localised at defect sites, as an ideal environment for cavity quantum electrodynamics; (iii) the combination of defect modes with an active medium, in order to realise integrated low-threshold microlasers. The project will be conducted in close contact with experimental and theoretical groups, in particular the group of V. Sandoghdar at ETH Zurich.