Quantum computer works best switched off

2019-03-02 11:07:00

Even for the crazy world of quantum mechanics, this one is twisted. A quantum computer program has produced an answer without actually running. The idea behind the feat, first proposed in 1998, is to put a quantum computer into a “superposition”, a state in which it is both running and not running. It is as if you asked Schrödinger’s cat to hit “Run”. With the right set-up, the theory suggested,