As a consequence of this additional uncertainty, if the quantum demon makes a measurement of a nucleus which forces it to choose one state or the other, he is creating new information.

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But uncertainty is at the core of quantum mechanics.

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In theory, this uncertainty should allow a full-sized quantum computer to do lots of calculations in parallel, and thus to solve problems that would take forever or, at least, several billion years on a traditional machine.

ECONOMIST: Quantum computing

Heisenberg's uncertainty principle, one of the central tenets of quantum mechanics, maintains that you cannot pin down all the physical properties of a particle at the same time.

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