The chair for Semiconductor Quantum Nanosystems led by Jonathan Finley explores a wide range of topics related to the fundamental physics of nanostructured materials and their quantum-electronic and -photonic properties. Members of the institute study the unique electronic, photonic and quantum properties of materials patterned over nanometer lengthscales and explore how sub-components can be integrated together to realise entirely new materials with emergent properties. This convergence of materials-nanotechnology, quantum electronics and photonics is strongly interdisciplinary, spanning topics across the physical sciences, as well as materials science and engineering. Current research focuses on: (i) the development and exploration of quantum semiconductor nanomaterials such as artificial atoms, molecules and nanowires and two-dimensional crystals, (ii) nanophotonics including photonic crystals and plasmonic materials and their use to enhance interactions between light and matter and (iii) the manipulation and exploitation of quantum coherence in integrated nanosystems. Full details of the research topics being pursued are presented on the research pages of the institute at www.wsi.tum.de