Light propagation effects in strongly interacting gases

量子光学的学科涉及光辐射和物质的相互作用，最终目的是观察和控制非平凡的量子动力学。这通常是在稀薄原子系综系统中实现的。我们正在研究的根本问题是，在原则上和实践中，强相互作用的系统可以在多大程度上受到控制。拟议的项目涉及三个不同主题的相关方面。PI将研究合作行为的建立，如超辐射和由此产生的影响，特别是在存在相干场和多能级的情况下。其次，她将研究光在强相互作用偶极子存在的情况下传播的非线性相干相互作用。她将特别探索这种由分子相互作用介导的非线性是否可以被用来在量子信息处理所需的那种单光子之间产生耦合。第三部分将偶极相互作用与基于量子相干的负折射材料的性质联系起来。对于所有三个项目，PI将专注于偶极调节的相互作用和非线性。

The subject of quantum optics involves interaction of optical radiation and matter withthe ultimate goal of observing and controlling non-trivial quantum dynamics. This iscommonly achieved in systems of, e.g., dilute atomic ensembles. The fundamentalquestion we are investigating is to what extent strongly interacting systems can becontrolled, both, in principle and in practice. The proposed project involves relatedaspects of three separate topics. The PI will investigate the build-up of cooperativebehavior such as superradiance and effects arising from it, specifically in the presenceof coherent fields and multiple levels. Secondly, she will study nonlinear coherentinteractions of light propagating in the presence of strongly interacting dipoles. She will,in particular, explore if such nonlinearities, mediated by molecular interactions, can beused to create coupling between single photons of the kind required for quantuminformation processing. A third part connects dipolar interactions with the properties ofquantum coherence based negative- refraction materials. For all three projects the PIwill concentrate on dipole-mediated interactions and nonlinearities.