The only dated deadline is not a technical one
No power station will close, no server will be replaced, and yet French companies are already working against a deadline that no laboratory set. The researcher who did most to bring the threat closer built no qubit: he simply redid his sums.
No, the machine does not try every answer at once
A qubit is not worth zero and one at the same time, and a quantum machine explores nothing in one go. Here is what a quantum computation really does, what you feed it, and why it has to be run a hundred thousand times.
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