1. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People’s Republic of China
2. Key Laboratory of Education Ministry for Information Storage Systems, Huazhong University of Science and Technology, Wuhan, Hubei 430074, People’s Republic of China
3. Shenzhen Huazhong University of Science and Technology Research Institute, Shenzhen, Guangdong 518057, People’s Republic of China