澳门金沙导航网站:Quantum computers? Don't hold your breath


Quantum computing will never work. At least, that’s the view of one physicist who thinks that unavoidable noise will always stand in its way. In theory, a quantum computer could be far more powerful than any existing device. Making it work, however, means protecting the quantum particles used in its calculations from the disrupting noise of the outside world. To date, this has been achieved only for a few particles for fractions of a second. A useful device would have to be noiseless for far longer,
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