Proof That a Quantum Computer Can Outperform a Classical One

A leaked paper has given the game away

The Economist
Sep 26, 2019 · 5 min read

In an article published in 2012 John Preskill, a theoretical physicist, posed a question: “Is controlling large-scale quantum systems merely really, really hard, or is it ridiculously hard?” Seven years later the answer is in: it is merely really, really hard.

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The Economist

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