1. School of Electrical and Electronic Engineering, Nanyang Technological University, Block S2.1, 50 Nanyang Avenue, Singapore 639798, Singapore
2. National Institute of Education, Nanyang Technological University, 1 Nanyang Walk, Singapore 637616, Singapore
3. Centre for Quantum Technologies, National University of Singapore, Singapore 117543, Singapore
4. MajuLab, CNRS-UNS-NUS-NTU International Joint Research Unit, UMI 3654, Singapore 117543, Singapore