So take what I'm about to say with a grain of salt but I believe that current generation of quantum computers (quantum digital) is fundamentally flawed. Basically all architectures I've seen still use bits (qubits are still bits and use entanglement) as opposed to the superior signals. The class of computers I'm talking about is called continuous-variable quantum computers (<a href="https://en.wikipedia.org/wiki/Continuous-variable_quantum_information" rel="nofollow">https://en.wikipedia.org/wiki/Continuous-variable_quantum_in...</a>). Unlike DQ, it doesn't use entanglement.<p>They are similar to the old school analog electric computers. They have some interesting properties and I can actually imagine programming one unlike DQ.<p>There's a fourth class, continuous analog with entanglement which are superior to both, DQ, and continuous-variable quantum computers but right now we should really be looking into the continous variable ones.