Google claims ‘quantum supremacy’, here’s what it means

BERLIN: Google said on Wednesday it had achieved a breakthrough in computer research, by solving a complex problem in minutes with a so-called quantum computer that would take today’s most powerful supercomputer thousands of years to crack.
Official confirmation of the breakthrough in quantum computing came in a paper published in science journal Nature, after weeks of controversy following the leak of a draft, over whether Google’s claim of “quantum supremacy” was valid.
Computer scientists have for decades sought to harness the behaviour of sub-atomic particles that can simultaneously exist in different states – in contrast to the “real” world that people perceive around them.