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    Home » From time crystals to wormholes: When is a quantum simulation real?
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    From time crystals to wormholes: When is a quantum simulation real?

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    From time crystals to wormholes: When is a quantum simulation real?
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    WHEN scientists reported they’d created a space-time wormhole in November final 12 months, the world’s media had been all around the story, despite the fact that they struggled to make sense of it. A journalist for the web site UNILAD put it neatly once they wrote: “So, you might have to bear with us here a bit, because it’s all very complicated and new.”

    As far as many observers might see, physicist Maria Spiropulu on the California Institute of Technology and her colleagues had in truth merely used a quantum laptop to simulate a wormhole. Good luck flying a spaceship by that. What confused issues was that the staff insisted the work amounted to extra than simply a simulation. The quantum computation, the researchers mentioned, was totally equal to the creation of a wormhole.

    If you discover that onerous to swallow, you aren’t alone. Ask different physicists about Spiropulu’s claims and also you have a tendency to get a lot of lengthy pauses, chin-stroking and disagreement. It appears there is real confusion about if and when a quantum computation can create actual entities or simply simulate them.

    The putative wormhole isn’t the one factor mentioned to have been conjured up by quantum computer systems just lately – there is additionally the alluringly named time crystal, in addition to unusual particles known as nonabelions, touted as the perfect ingredient for next-generation quantum computer systems. But whether or not these quantity to cases of true creation or not is a query that takes us into deep waters. It is a new twist on the riddle that has haunted physics since quantum mechanics was devised within the early twentieth century: what is actually actual?

    Regular computer systems use …

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