Researchers build an all-optical transistor

See on Scoop.itTracking the Future

Optical computing — using light rather than electricity to perform calculations — could pay dividends for both conventional computers and quantum computers, largely hypothetical devices that could perform some types of computations exponentially faster than classical computers. 
But optical computing requires light particles — photons — to modify each other’s behavior, something they’re naturally averse to doing: Two photons that collide in a vacuum simply pass through each other.

See on web.mit.edu

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