1. Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link Singapore 637371 Singapore
2. Centre for Disruptive Photonic Technologies The Photonics Institute Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore
3. Institute of Modern Optics Tianjin Key Laboratory of Micro‐scale Optical Information Science and Technology Nankai University Tianjin 300350 China
4. State Key Laboratory of Surface Physics and Department of Physics Fudan University Shanghai 200433 China
5. Institute for Nanoelectronic Devices and Quantum Computing Fudan University Shanghai 200433 China
6. Shanghai Research Center for Quantum Sciences Shanghai 201315 China
7. School of Electrical and Electronic Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore