1. Centre for Disruptive Photonic Technologies, TPI & SPMS, Nanyang Technological University, 637371 Singapore, Singapore
2. Laboratoire de Physique des Lasers, UMR 7538 du CNRS, Université Paris13-Sorbonne-Paris-Cité, F-93430 Villetaneuse, France
3. Optoelectronics Research Centre and Centre for Photonic Metamaterials, University of Southampton, Southampton SO17 1BJ, United Kingdom
4. MajuLab, International Joint Research Unit UMI 3654, CNRS, Université Côte d'Azur, Sorbonne Université, National University of Singapore, Nanyang Technological University, Singapore, Singapore
5. Centre for Quantum Technologies, National University of Singapore, 117543 Singapore, Singapore