¹1 Key Lab. of Advanced Micro/Nano Electronic Devices & Smart Systems of Zhejiang, College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China

²2 Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA

³3 School of Information Science and Engineering, Shandong University, Qingdao 266237, China

⁴4 Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore

⁵5 State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun 130012, China