Topological control of optical skyrmions for logic operations via vortex beam

Abstract Optical skyrmions, as topologically protected vector textures, hold promise for high-density photonic devices, yet their dynamic control remains constrained by the flexibility of nanostructures. In this work, we demonstrate the controllable excitation of optical skyrmions and skyrmionium using circularly polarized vortex beam with OAM. Breaking the symmetry of skyrmion plasmonic structures, we generate optical skyrmion pairs and elucidate the coupling dynamics between the optical vortex and the skyrmion textures. The vortex beam-driven optical skyrmion logic operator is proposed, which integrates skyrmion-based components into optical computing and communication systems.