Author Affiliations

Qiang Wang,¹ Meng Xiao,^2,3 Hui Liu,^1,* Shining Zhu,¹ and C. T. Chan²

¹National Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China

²Department of Physics and the Institute for Advanced Study, the Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong

³Department of Electrical Engineering, and Ginzton Laboratory, Stanford University, Stanford, California 94305, USA

^*Corresponding author: liuhui@nju.edu.cn