Simultaneous SAM and OAM identification is a significant but challenging topic. Chinese scientists have demonstrated that a single spin-decoupled azimuth-quadratic phase metasurface could perform photonic momentum transformation, where different spin vortices are converted into focusing patterns with a distinct azimuth on a transverse plane, so that simultaneous identification of both SAM and OAM can be done via a single-shot measurement. This approach may underpin the development of integrated optical systems.