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That's because quantum computers are still a pipe dream, so people assume it can do anything.

Anyway, no - http://security.stackexchange.com/questions/25375/why-not-us... tells us that you'd need the energy of all the output of our own sun for 32 years to even just count to 2^192




Quantum computers have a fairly well-studied mathematical abstraction about which we can reason quite well. Algorithms for quantum computers exist which will break RSA; no similar algorithms exist to break AES.

And the link actually only applies to traditional computers; quantum computers have no analogue of destructively setting a bit, because all operations on a quantum computer are fundamentally reversible, and hence do not entail any inherent energy loss to entropy.




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