1. Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei430074, People’s Republic of China
2. Key Laboratory of Education Ministry for Information Storage Systems, Huazhong University of Science and Technology, Wuhan, Hubei430074, People’s Republic of China
3. School of Electronic and Information Engineering, Hubei University of Science and Technology, Xianning437100, China