"At a molecular level the world is very different from the way we experience it. The weird ‘quantum’ nature of this molecular world has captivated scientists for several decades, and now they are attempting to build a machine - a ‘quantum computer’ - that will harness this atomic strangeness to perform tasks practically impossible with conventional technology.
But beyond the computational possibilities lie more pertinent questions: What does quantum computing tell us about the underlying nature of the universe? Are we inhabiting just one of an infinite number of parallel worlds? And if so, what does that say about our place in existence?"