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