The State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China

¹ Nanjing National Laboratory of Microstructures, School of Electronic Science and Engineering, School of Physics, Nanjing University, Nanjing 210093, China

² Department of Applied Physics, Nanjing University of Technology, Nanjing 210009, China

¹ Department of Electrical Engineering, Stanford University, Stanford, California 94305, USA

² Department of Materials Science and Engineering, Stanford University, Stanford, California 94305, USA

¹ Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China

² Advance Research Laboratories, Tokyo City University, Tokyo 158-0082, Japan

Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China

School of Physics and State Key Laboratory for Mesoscopic Physics, Peking University, Beijing 100871, China

State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

State Key Laboratory of Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University, Beijing 100084, China

¹ The State Key Laboratory of Advanced Optical Communication Systems and Networks, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China

² Information and Communications College, Guilin University of Electronic Technology, Guilin 541004, China

¹ Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentations, Zhejiang University, Hangzhou 310058, China

² Joint Research Center of Photonics of Zhejiang University and South China Normal University, South China Normal University, Guangzhou 510006, China

¹ Key Laboratory of Weak Light Nonlinear Photonics Ministry of Education, Nankai University, Tianjin 300071, China

² Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf, Dresden 01314, Germany

Optoelectronic System Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

The State Key Laboratory of Advanced Optical Communication Systems and Networks, Peking University, Beijing 100871, China

¹ Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA

² Quantum Science Research, Hewlett-Packard Laboratories, Palo Alto, CA 94304, USA

³ Tyndall National Institute, Lee Maltings, Photonics Building, Cork, Ireland

⁴ Photonics and Microwave Engineering Royal Institute of Technology Kista, Stockholm S-164 40, Sweden

State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors (IS), Chinese Academy of Sciences (CAS), Beijing 100083, China

¹ State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

² College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China

State Key Laboratory of Advanced Optical Communication Systems and Networks, Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, China