1. Institute of Nanotechnology, Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
2. JCMwave GmbH, 14050 Berlin, Germany
3. Computational Nano Optics, Zuse Institute Berlin, 14195 Berlin, Germany
4. Max Planck Institute for Intelligent Systems, 70569 Stuttgart, Germany
5. Institute for Applied and Numerical Mathematics, Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
6. Institute of Physical Chemistry, University of Stuttgart, 70049 Stuttgart, Germany
7. Institute of Theoretical Solid State Physics,Karlsruhe Institute of Technology, 76131 Karlsruhe, Germany
8. Max Planck School of Photonics, 07745 Jena, Germany