Its research paper is now available to read in its entirety
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| © Credit: Google Google’s Sycamore quantum processor, which was behind the breakthrough. |
Google has officially announced that it’s achieved quantum supremacy in a new article published in the scientific journal Nature. The announcement comes exactly one month after it initially leaked,
when Google’s paper was accidentally published early. Now, however,
it’s official, meaning the full details of the research are public, and
the broader scientific community can fully scrutinize what Google says
it’s achieved.
Google says that its 54-qubit Sycamore processor was able to perform a
calculation in 200 seconds that would have taken the world’s most
powerful supercomputer 10,000 years. That would mean the calculation,
which involved generated random numbers, is essentially impossible on a
traditional, non-quantum computer.
Unsurprisingly, IBM, the company that operates the supercomputer that Google claims to have beaten, and a key quantum computer competitor, is disputing Google’s claims. In a blog post
published pre-emptively on Monday, the company said that the same task
could be performed on a classical system in just 2.5 days, rather than
the 10,000 years that Google is claiming. IBM says that Google “failed
to fully account for plentiful disk storage” when estimating how long
its traditional supercomputer would take to perform the calculation.
Despite IBM’s attempts to downplay Google’s achievement, many in the research community welcomed the news, with scientists quoted by The New York Times
likening Google’s breakthrough to the Wright brothers’ first plane
flight in 1903. We may still be years away from having quantum computers
that are useful for practical tasks, but Google’s findings could
finally have provided proof that such a future is possible in the first
place.
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