Johannes joined the Flatiron Institute in 2019 as an Associate Research Scientist at the Center for Computational Quantum Physics. He is also an Assistant Professor at the City College of New York City. Johannes earned his Ph.D. in theoretical physics from the Fritz Haber Institute and the Humboldt University in Berlin, Germany and his Diploma in Physics from the Karlsruhe Institute of Technology, Germany. After his Ph.D., Johannes was a postdoctoral researcher at the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg, Germany and a DFG Postdoctoral Fellow at Harvard University.
Johannes’ research is focused on light-matter interactions on a microscopic level in particular in the strong-coupling regime. He is interested in both the development of new computational methods to describe these regimes, e.g. quantum-electrodynamical density-functional theory, as well as their applications in catalysis, spectroscopy, and quantum-information processing.