Google claims 'quantum supremacy'; experts say hold on a qubit

Topics Google Inc

Google said on Wednesday it had achieved a breakthrough in computer research, by solving a complex problem in minutes with a so-called quantum computer that would take today's most powerful supercomputer thousands of years to crack.

  Official confirmation of the breakthrough in quantum computing came in a paper published in science journal Nature, after weeks of controversy following the leak of a draft, over whether Google's claim of "quantum supremacy" was valid.   Computer scientists have for decades.....

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