Stanford engineers’ breakthrough heralds super-efficient light-based computersInfrared light enters this silicon structure from the left. The cut-out patterns, determined by an algorithm, route two different frequencies of this light into the pathways on the right. This is a greatly magnified image of a working device that is about the size of a speck of dust. | Photo: Alexander Piggott Stanford electrical engineer Jelena Vuckovic wants to make computers faster and more eff
