(Phys.org)—Two of the most well-known ideas that distinguish the quantum world from the classical one are nonlocality and contextuality. Previously,physicists hold theoretically shown that both of these phenomena cannot simultaneously exist in a quantum system, as they are both just different manifestations of a more fundamental concept, or the assumption of realism. Now in a new paper,physicists hold for the first time experimentally confirmed that these two defining features of quantum mechanics never appear together.
Source: phys.org