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These kind of arguments - that physics will somehow magically forbid us from scaling up quantum computers - are exactly why Google does these experiments on lar
by pjs_ 2y ago
These kind of arguments - that physics will somehow magically forbid us from scaling up quantum computers - are exactly why Google does these experiments on larger and larger chips. If the skeptics are right, we expect their systems to reach some kind of wall where the machine does not behave as anticipated by quantum computing optimists. So far we have not hit any such wall, the machine behaves exactly the way it is supposed to (with predictable error rates etc) and the Google results are on the far side of various thresholds that were believed challenging or impossible by the more skeptical end of the community.
- GTP 2y ago> physics will somehow magically forbid us from scaling up quantum computers Not magically >with predictable error rates etc This isn't my field of expertise, but my understanding is that this is precisely the issue: these predictable error rates are predicted to be a deal-breaker for the amount of qbits that are needed to break RSA with today's commonly-used key lengths. In my view, the fact that the error rates appear to match predictions so far, only sustain this point. A reason to be optimistic could be that sometimes we get to hear about new promising error-correction techniques though. We'll see how future development goes, in the end it is hard to predict what will happen. But this is also why I think we should be more careful in claiming that quantum computer will break classical cryptography in the short to medium term.
- fluoridation 2y ago>So far we have not hit any such wall On the contrary. The wall in question is "can the computer compute the result we need correctly and efficiently?" So far no QC has climbed over that wall.