There's a LOT of work going on in photonics right now. Quantum entanglement at greater than c(DeBroglie's matter wave crest speed - U=c^2/v), "slow" light(down to 37 mph), fiber optics, materials that change index of refraction in picoseconds, and of course photons are 1000 times faster than electrons. Thus it just seems logical that light will be the basis for a whole new type of computer vastly superior to poky dit-dah-dit binary-electron computers.....Yes, you still need to solve read/write/memory/operations problems but think of it : 256 distinguishable colors, 500 pixels/line, 500 lines = a very BIG number. If you can distinguish a MILLION wavelengths(+ intensities + poarizations, say)and high definition TV, you can write a number(representing data/info)so LARGE that it would be like a football field of grass, and you'd spend your life human-eye-reading a single blade of grass. What is 3^4^5^6^7^8^9^10^11? And that's just for starters...add sounds(frequencies, intensities)odors...hey, it could even beat me and deep blue at chess.