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quantum computing

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    Should Scientists Use the Phrase “Quantum Supremacy”?

    Forget for a moment that you know the meaning of “quantum supremacy,” the idea of a quantum computer outdoing its conventional counterpart. What does the phrase instantly bring to mind? Perhaps the idea that the quantum world, with its electrons, neutrons, and quarks, is, somehow, better than ours—more dazzling and awe-inspiring. Or perhaps it’s the […]

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    Physicists Say Google’s Quantum Computer Is Still Far From Practical

    Google and company claim that their quantum computer can do in 200 seconds what it would take a supercomputer 10,000 years to do.Illustration by plotplot / Shutterstock News on the quantum physics grapevine, Frankfurt Institute theoretical physicist Sabine Hossenfelder tells me, is that Google will announce something special next week: Their paper on achieving quantum […]

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    How Classical Cryptography Will Survive Quantum Computers

    Quantum Lab: Scientists are fabricating quantum photonic circuits—consisting of waveguides and other elements—to manipulate single photons for future quantum communications and processing.Oak Ridge National Laboratory / Flickr Justin Trudeau, the Canadian prime minister, certainly raised the profile of quantum computing a few notches last year, when he gamely—if vaguely1—described it for a press conference. But […]

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    How Classical Cryptography Will Survive Quantum Computers

    Quantum Lab: Scientists are fabricating quantum photonic circuits—consisting of waveguides and other elements—to manipulate single photons for future quantum communications and processing.Oak Ridge National Laboratory / Flickr Justin Trudeau, the Canadian prime minister, certainly raised the profile of quantum computing a few notches last year, when he gamely—if vaguely1—described it for a press conference. But […]