[recentdarkness]

Finally a viable platform to mine bitcoin and other crypto currencies

[zakk]

You cannot mine Bitcoin with a quantum computer, as there is no quantum algorithm to calculate SHA hashes.

[tromp]

All hashcash based PoW, including bitcoin's, is subject to quantum speedup by Grover's search algorithm. It allows you to find a hash output with 80 leading zero bits in roughly 2^40 steps rather than the 2^80 steps classically needed.