Scientists say they've debunked Google’s quantum supremacy claims once and for all

[jim bell]

 Scientists say they've debunked Google’s quantum supremacy claims once and for all 
https://share.newsbreak.com/1joxv01w

A team of scientists in China claim to have replicated the performance of Google’s Sycamore quantum computer using traditional hardware, thereby undermining the suggestion the company has achieved quantum supremacy.

As reported by Science magazine, the scientists used a system comprised of 512 GPUs to complete the same calculation developed by Google to demonstrate it had passed the quantum supremacy milestone back in 2019.

The endeavor was led by statistical physicist Pan Zhang, who said his team’s supercomputer performed the calculation 10 billion times faster than Google had thought possible.

Quest for quantum supremacy

Quantum supremacy (or quantum advantage) can be defined as the point at which quantum computers can outstrip the maximum potential performance of classical supercomputers in a particular discipline.

Three years ago, Google announced it had achieved this feat with Sycamore, which it said took just 200 seconds to complete a statistical mathematics problem that would take a supercomputer 10,000 years to solve.

The problem was architected in such a way as to accentuate both the attributes of quantum computers, which exploit a phenomenon known as superposition to speed up calculations, and the limitations of traditional systems.
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