Descriptions of quantum computers are given using ordinary bits, not qubits. But this does raise the question of whether there’s any advantage to being able to specify entangled ensembles of quantum computers. (Of course we can always specify them to arbitrary precision as the intermediate state of a normal quantum computation. Maybe there’s some algorithms where getting to that point is the hard part and everything else is easy—but I think in those cases the intermediate state is necessarily going to be complicated.)
Descriptions of quantum computers are given using ordinary bits, not qubits. But this does raise the question of whether there’s any advantage to being able to specify entangled ensembles of quantum computers. (Of course we can always specify them to arbitrary precision as the intermediate state of a normal quantum computation. Maybe there’s some algorithms where getting to that point is the hard part and everything else is easy—but I think in those cases the intermediate state is necessarily going to be complicated.)