1. Department of Electronic Materials Engineering, Research School of Physics, The Australian National University, Canberra, ACT 2601, Australia
2. Australian National Fabrication Facility, Research School of Physics, The Australian National University, Canberra, ACT 2601, Australia
3. School of Electrical and Data Engineering, Faculty of Engineering and Information Technology, University of Technology Sydney, Ultimo, NSW 2007, Australia
4. Advanced Optics and Photonics Laboratory, Department of Engineering, School of Science & Technology, Nottingham Trent University, Nottingham, NG1 4FQ, United Kingdom
5. School of Engineering and Information Technology, University of New South Wales, Canberra, ACT 2610, Australia
6. Australian Research Council Centre of Excellence for Transformative Meta-Optical Systems, Research School of Physics, The Australian National University, Canberra, ACT 2601, Australia