your brain error corrects, but the amount of data it requires to do so is immense and the way we're approaching quantum computing has no resemblance to the way our brains work, at present.
there's likely better possibilities in building supercomputers out of bacteria bioengineered into behaving like synapses, but we need to get something like wave packets happening in the quantum computer, not pretend we can rely on this concept of superposition, which we don't even have a viable theory of. we don't know what superposition even is, yet we're trying to design computers around it, then getting frustrated when they don't work.
it's a dead end.