Scientists say they've debunked Google’s quantum supremacy claims once and for
all
[1]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 [2]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.

References

   1. https://share.newsbreak.com/1joxv01w
   2. https://www.techradar.com/news/google-creates-quantum-chip-millions-of-times-faster-than-the-fastest-supercomputer