Author Affiliations

Huanlu Li,^1,2,3,4,5 David Phillips,^1,2,3,4,5 Xuyang Wang,^1,2,3,4,5 Daniel Ho,^1,2,3,4,5 Lifeng Chen,^1,2,3,4,5 Xiangqi Zhou,^1,2,3,4,5 Jiangbo Zhu,^1,2,3,4,5 Siyuan Yu,^1,2,3,4,5 and Xinlun Cai^1,2,3,4,5

¹Department of Electrical and Electronic Engineering, University of Bristol, University Walk, Bristol, BS8 1TR.

²School of Engineering, Rankine Building, Oakfield Avenue, University of Glasgow, Glasgow G12 8LP, UK.

³H.H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK.

⁴Department of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, UK.

⁵State Key Laboratory of Optoelectronic Materials and Technologies and School of Physics and Engineering, Sun Yat-sen University, Guangzhou 510275, China.