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Commodore 64 claimed to outperform IBM's quantum system — sarcastic researchers say 1 MHz computer is faster, more efficient, and decently accurate (www.tomshardware.com)

submitted 7 months ago by [email protected] to c/technology

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[–] [email protected] 6 points 7 months ago* (last edited 7 months ago)

Argh it's been a while. The question is whether an n-qbit system actually can contain arbitrary (k <= 2^n^) amounts of n-bit states for arbitrary values of n and k: Such a system might work up to a certain number, but then lose coherence once you try to exceed what the universe can actually compute. As far as I know we simply don't know because noone has yet built a system that actually pushes boundaries in earnest. The limiting factor is more n than k I think but then I'm not a quantum physicist.

It would still mean ludicrously miniaturised computing, in fact, minimised to a maximum extent, but it would not give the asymptotic speedup cryptologists are having nightmares about.