A light switch for fast electronics | Max-Planck-Gesellschaft https://www.mpg.de/6694490/light-frequencies-electronics
Ultra-short, intense laser pulses serve as a switch, transforming fused silica from an insulator to a conductor and back within a few femtoseconds. A research team lead by F. Krausz at the Max Planck Institute of Quantum Optics have demonstrated this rapid switching of a dielectric, which is of interest for high-clock-speed electronics, using femtosecond pulses, and observed the switching using attosecond pulses.
clock speeds of a few billions of switching cycles per