The task of the successful candidate is to describe light-matter interaction in and around nanostructures. Both, the material, and the electromagnetic field will be treated in a quantum fashion. The project is part of the Cooperative Research Center SFB 1375 Nonlinear Optics down to Atomic Scales (NOA) https://www.noa.uni-jena.de/. In NOA we aim at a close cooperation with experimental groups.