There's been a lot of work trying to make light computers, because light has a lot of advantages over electricity as a means of transmitting data.
Now there's a way to transform light to sound, which slows the data down enough that ordinary computers can make use of it. This could be a game changer that might increase the speed of computers by orders of magnitude. Have a look at the article here.
Regardless, using sound to capture data transmitted as light is interesting all by itself.
