What a terrible article, and it's on a University' official site. The headline is highly misleading. Making a smaller beam-splitter has almost no effect on maki

What a terrible article, and it's on a University' official site. The headline is highly misleading. Making a smaller beam-splitter has almost no effect on making computers faster, let alone "at the speed of light". This would be news-worthy and revolutionary if they somehow came up with a photonic equivalent of a transistor. Something that doesn't exist yet, at least in the traditional room-temperature equivalent, that's easy to integrate on a chip. All these passive photonic components, such as modulators, beam-splitters, wave-guides and others are all just there to interface to the real work-horses: the electronic transistors. And the best of these we have currently have a maximum oscillation frequency of 1-2 THz (InP HEMTs). Anyway, saying you can compute at the 'speed of light' is a meaningless statement. We measure compute performance in cycles per second.