1. Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems
2. School of Physics
3. Beijing Institute of Technology
4. Beijing 100081
5. China
6. Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences
7. Beijing 100190
8. Faculty of Physics and Center for Nanointegration (CENIDE)
9. University of Duisburg-Essen
10. 47057 Duisburg
11. Germany
12. Yangtze River Delta Physics Research Center Co.
13. Ltd. – Liyang