Google announces it has achieved what it describes as "quantum supremacy," a chip able to handle calculations impossible for traditional computers. However IBM disputes the claim as it insist classical systems can, in fact, handle the calculation in question.
The Google paper on the topic, "Quantum Supremacy Using a Programmable Superconducting Processor," was leaked last month after it was accidentally uploaded on a NASA website before it was officially published in Nature. It describes "Sycamore", a 54-qubit processor able to prove the randomness of numbers produced by a random number generation in all of 200 seconds. In comparison, Google says, the same calculation would take faster super computer no less than 10000 years. And the name of that fastest supercomputer in the world? The IBM Summit.
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