But logic does not only help a computer to view the world, it also offers the possibility of introspection: computer codes can check other computer codes and look for logical errors.

Google's new 105-qubit 'Willow' quantum processor has surpassed a key error-correction threshold first proposed in 1995 — with errors now reducing exponentially as you scale up quantum machines.

Logical qubits — physical quantum bits, or qubits, connected through quantum entanglement — reduce errors in quantum computers by storing the same data in different places.

IBM now describing its first error-resistant quantum compute system Company is moving past focus on qubits, shifting to functional compute units.

It does this by putting enough quantum states into a single piece of hardware, allowing each of those pieces to hold an error-corrected qubit.