Are you fascinated by the idea of using light for all-optical information processing? Can you envision optical metasurfaces that perform operations on data at the speed of light? Are you motivated to contribute to new technologies that realize radical improvements in the energy efficiency of information and communication technology? As part of the Dutch consortium NL-ECO on energy-efficient computing, AMOLF is seeking talented and motivated candidates for two open PhD positions on Wave-based computing with programmable optical metasurfaces.