Quantum computers have a fairly well-studied mathematical abstraction about which we can reason quite well. Algorithms for quantum computers exist which will br

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.