1. School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore
2. IRL 3288 CINTRA (CNRS‐NTU‐THALES Research Alliances) Nanyang Technological University Singapore 637553 Singapore
3. State Key Laboratory of Superlattices and Microstructures Institute of Semiconductors Chinese Academy of Sciences Beijing 100083 P. R. China
4. School of Materials Science and Engineering Harbin Institute of Technology Harbin 150001 P. R. China
5. School of Electrical & Electronic Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore
6. School of Materials Science and Engineering Peking University Beijing 100871 P. R. China
7. Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore
8. School of Optoelectronic Science and Engineering University of Electronic Science and Technology of China Chengdu 610054 P. R. China
9. State Key Laboratory of Low‐Dimensional Quantum Physics and Department of Physics Tsinghua University Beijing 100084 P. R. China
10. Beijing Academy of Quantum Information Sciences Beijing 100193 P. R. China
11. Key Lab of advanced optoelectronic quantum architecture and measurement (Ministry of Education) Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems and School of Physics Beijing Institute of Technology Beijing 100081 P. R. China
12. Institute for Functional Intelligent Materials National University of Singapore Blk S9, Level 9, 4 Science Drive 2 Singapore 117544 Singapore