Julian Schulz (left) from the University of Kaiserslautern-Landau (RPTU) with the resonator mirror used in the experiment at the University of Bonn. Next to him Prof. Dr. Georg von Freymann.

Julian Schulz (left) from the University of Kaiserslautern-Landau (RPTU) with the resonator mirror used in the experiment at the University of Bonn. Next to him Prof. Dr. Georg von Freymann.