Full polarization states modulating via an ultra-thin quarter-wave plate Shiyi Xing, Xiongjun Shang, Hairong He, Qian He, Tong Li and Si Liu Eur. Phys. J. D, 75 3 (2021) 87 Published online: 08 March 2021 DOI: 10.1140/epjd/s10053-021-00104-9