Computer gamers help a team of physicists to close the "freedom-of-choice" loophole that fails the Bell test experiments to entirely negate Albert Einstein's theory of local realism. The participation ...

Physicists once treated Einstein’s picture of a clockwork universe as the gold standard for what “reality” should look like, with objects carrying definite properties whether or not anyone is watching ...

While Bell inequalities have been proven to be an optimal tool for ruling out local realism in quantum experiments, scientists have now shown that inequalities can never be optimal for tests of ...

In the early 1960s the physicist John Bell dreamt up one of the most profound experimental tests ever imagined. While on sabbatical in the US on leave from CERN, he had been contemplating the ...

Two recent experimental advances are probing the foundations of quantum mechanics in unprecedented ways. Researchers have demonstrated novel methods to test Bell inequalities and search for ...

A new experiment uses superconducting qubits to demonstrate that quantum mechanics violates what’s called local realism by allowing two objects to behave as a single quantum system no matter how large ...

In the 1930's when scientists, including Albert Einstein and Erwin Schrödinger, first discovered the phenomenon of entanglement, they were perplexed. Entanglement, disturbingly, required two separated ...