Hacker News new | ask | show | jobs
by mmf 2876 days ago
Optical computation will never become relevant at scale. There are fundamental reasons for this: first, particle size. A photon at usable wavelengths is extremely large, much larger of any modern electron based _devices_ This makes it imossible to scale to usable density. Second, optic-optic (as opposed to electro-optic) non linear effects are based on interaction with electrons, in particular with electron decay from an energy state to another which is tipically extremely slow.
2 comments

Isn't optical Kerr effect (separate from Kerr electro-optic and Magneto-optic Kerr effect) pure optic-optic nonlinearity without electrons?
"If an elderly but distinguished scientist says that something is possible, he is almost certainly right; but if he says that it is impossible, he is very probably wrong." - Arthur C. Clarke
"A platitude is a trite, meaningless, or prosaic statement, often used as a thought-terminating cliché, aimed at quelling social, emotional, or cognitive unease" – Wikipedia
"Touche." - Me.