Quantum is just a buzzword nowadays. Modern machines that utilize so called quantum processes, are simply using qubits instead of electrons. Yes it is many fold faster (Google bought a server recently using them), however first these systems need to be running at 0K (yes absolute ZERO kelvin), as even slight temp changes causes the sub-atomic particles to gain energy hence change state, hence incorrect results when reading the qubit.
True quantum computers will come about when quantum entanglement is utilized. That will be the day when no current hash is uncrackable. However that being said, by that time, prime numbers will of reached billions of digits as well due to powerful machines. Thus even quantum processes will have trouble dealing with numbers that large in encryption. Even though entanglement theoretically transmits data faster than light, that's not quite true as nothing is actually sent. But it is not instant. As data must still be read, hence it is not an infinite speed, as the act of reading will introduce a time differential.
So when you read on another sites about FTL travel, and 0s process calculations, they are wrong. I have read journal articles in Nature too about similar things, so much bullshit, I am only 21 with a Physics degree and I even I can say these professors are chatting our of their arses.