Google recently announced that the first demonstration of quantum supremacy could be just a few months away. I think they are entirely wrong. It is not just more than a few months away, it is forever away. I explain why below, but first I would like to take exception to their use of the word “supremacy” because what they are promising should not be called “quantum supremacy,” but one very narrow and specially constructed case in which quantum computing is better than traditional computing. To call this supremacy makes as much sense as claiming that strips of magnesium enjoy supremacy…
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