1. Chair
for Photonics and Optoelectronics, Department of Physics and Center
for NanoScience (CeNS), Ludwig-Maximilians-Universität München, Amalienstraße
54, 80799 Munich, Germany
2. Nanosystems Initiative Munich (NIM), Schellingstraße 4, 80799 Munich, Germany
3. Department
of Materials Science and Engineering and Center for Functional Photonics
(CFP), City University of Hong Kong, Hong Kong, Hong Kong SAR
4. Chair
of
Applied Physics, Department of Physics and Center for NanoScience
(CeNS), Ludwig-Maximilians-Universität München, Amalienstraße
54, 80799 Munich, Germany
5. Department
of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr.
5-13 (E), 81377 Munich, Germany