Author Affiliations

M. Zizlsperger,^1,* M. Plankl,¹ P. E. Faria Junior,¹ F. Mooshammer,¹ T. Siday,¹ F. Sandner,¹ F. Schiegl,¹ S. Maier,¹ M. A. Huber,^1,2 M. Gmitra,^1,3 J. Fabian,¹ J. L. Boland,⁴ T. L. Cocker,⁵ and R. Huber¹

¹Department of Physics, University of Regensburg, 93040 Regensburg, Germany

²Present address: Department of Applied Physics, Stanford University, Stanford, CA 94305, USA

³Present address: Institute of Physics, P. J. Šafárik University in Košice, 04001 Košice, Slovakia

⁴Photon Science Institute, Department of Electrical and Electronic Engineering, University of Manchester, Manchester M13 9PL, UK

⁵Department of Physics and Astronomy, Michigan State University, 48824 Michigan, USA

^*Corresponding author: martin.zizlsperger@ur.de