Spin-multiplexing phase-driven varifocal metalenses for multidimensional beam splitting and binary switchingYafeng Huang, Junwei Xu, Ximin Tian, Pei Ding, Zhanjun Yu, Jie Li, Yaning Xu, Shenglan Zhang, Xiaolong Ma, Xiangyang Duan and Zhi-Yuan LiEPL, 141 5 (2023) 55004DOI: https://doi.org/10.1209/0295-5075/acbdbb