New device switches terahertz pulses between electric and magnetic skyrmions, laying the groundwork for robust wireless data encoding. By using a nonlinear metasurface that converts shaped near-infrared femtosecond laser pulses into tailored THz toroidal light pulses, the compact device could also enable light-based circuits that generate, switch and route different signal states. Find the full release in our Newsroom! ntu_sg tianjin_uni #Wireless #Data #LaserScience #Technology