1. School of Materials Science and Engineering, Central South University, 410083 Changsha, P. R. China
2. Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, 410083 Changsha, P. R. China
3. School of Mechanical Engineering, Hunan University of Science and Technology, 411201 Xiangtan, P. R. China
4. Department of Chemical Engineering, Tsinghua University, 100084 Beijing, P. R. China
5. POLIMA-Center for Polariton-driven Light-Matter Interactions & Danish Institute for Advanced Study, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
6. Information and Network Center, Central South University, 410083 Changsha, P. R. China