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Ultraminiature optical chip smaller than a grain of salt aims to ease quantum computing, data centre bottlenecks

An ultraminiature optical chip has emerged that could sharply reduce the burden of laser control, long seen as a key obstacle to scaling quantum computers. The chip, about 1 square millimetre in size, rapidly redirects a small number of laser beams to many target points. It can scan about 68.6 million light spots per second, more than 50 times faster than micromirror-based beam scanners. The technology remains at the experimental stage.