The term "quantum supremacy" was coined in 2012 by John Preskill, a professor of theoretical physics at Caltech, to describe the point at which a quantum computer can do something that a classical one cannot.
Crossing this threshold has become a guiding star for the tech companies that are building large-scale quantum computers. In 2019, in a paper published in the journal Nature, Google became the first to declare it had achieved quantum supremacy. Other groups have made similar claims in recent years.
However, several of these assertions, including Google's, have since been rejected, after researchers developed novel classical algorithms that go toe-to-toe with quantum computers.
As in the article, we really need to walk before we can run. Quantum computers are in so early stage they it'll quite require maybe another century to see their first practical use but Google became impatient and wanted to establish "Supremacy". Rightly denied.
When do you think this "quantum supremacy" will become a reality?