Professor of Quantum Physics at Freie Universität Berlin, Fraunhofer HHI and Helmholtz …

Theoretical Physics, DAMTP, University of Cambridge, Ghent University

University of Kaiserslautern-Landau, Dept. of Physics and research center OPTIMAS

Max Planck Institute for the Science of Light and University of Erlangen-Nuremberg

Michigan State University

Dresden University of Technology (TU Dresden), University of Regensburg

Professor of Physics and of Materials Science and Engineering, Penn State

Helsinki, Marburg, Stockholm, Michigan

Otto von Guericke Universität Magdeburg, Professor (emeritus) for Theoretical Physics

Associate Professor, Department of Physics and Astronomy, Uppsala University