I've been reading a question regarding the uses of quantum computing. There is a broad theme throughout the answers that seems to suggest that randomness generated via quantum means is somehow better than randomness generated via traditional means. I get the impression from some of those answers that the massive processing potential of quantum computers can somehow derandomise traditionally generated randomness.
A quantum computer would use quantum gates. They would be operating via entanglement and superposition to produce random states. A classical physics based random number generator using say a humble diode, would use chaos theory to produce entropy+. Both constructions would in their gross outputs generate large biases which would be whitened via additional hardware /software. So both techniques converge onto a conventional randomness extractor. Both techniques would also be massively affected by electrical system noise which might be ~50% of the total raw entropy in the quantum case as in this 2 Gb/s beam splitter. Electrical noise is generated mainly by classical physics.
Ultimately, a quantum random number generator outputs a sequence of bits that might be "1" with a 50% probability. I thought that random is random is random. Have I misunderstood?
+Diodes also use quantum effects for noise /entropy generation.