Welcome

This is the website of the Rotter group at the Institute for Theoretical Physics, Vienna University of Technology (TU Wien). Our main scientific interests are the propagation of waves through complex media, non-Hermitian physics and theoretical quantum optics.

News and latest research

An exceptional laser cavity

Together with the teams of Mercedeh Khajavikhan, Demetri Christodoulides and Patrick LiKamWa we showed how to create topological lasing modes in a laser cavity that steers light around an exceptional point. Congratulations to Alexander Schumer, who spent several months with our partner groups in the US and now serves as the first author of a joint paper in Science.  See also the news highlight in Laser Focus World and the press release from TU Wien.