We're straying off the 3d reservation here, but I will mention that there is reason to believe that the difficulty of entangling n qubits scales like n!
It's not something technological advancement can overcome--it's more like perpetual motion. Quantum computing will remain a theoretical exercise. Keeps some physicists in grant money, though.
It's not something technological advancement can overcome--it's more like perpetual motion. Quantum computing will remain a theoretical exercise. Keeps some physicists in grant money, though.