Sept 9, 2022 Prof. Qinghai Song’s team from Harbin Institute of Technology (Shenzhen) employ the physics of chiral quasi bound states in the continuum (BICs) and demonstrate the high purely, efficient and controllable emission of circularly polarized light from resonant metasurfaces. The research published on Science entitled Chiral emission from resonant metasurface, the corresponding authors are Prof. Qinghai Song and Prof. Yuri Kivhar.