1. College of Electronics and Information Engineering, Shenzhen University, Shenzhen 518060, People’s Republic of China
2. Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, People’s Republic of China
3. Institute for Advanced Study, Shenzhen University, Shenzhen 518060, People’s Republic of China
4. Department of Physics, National University of Singapore, Singapore 117542, Singapore