Quantum computing holds a lot of promise. The question is when the hyped and indeed potentially revolutionising technology will begin to deliver on it. According to UK quantum startup Phasecraft, it’s not that far off. The secret? Algorithms that can work on today’s “imperfect” quantum computers, without having to wait for the very tricky hardware to draw level. You could forgive the quantum sceptics for their “I’ll believe it when I see it” attitude.