Quantum guessing games

David Voss at APS Physics writes: ''Nonlocality—the entanglement of one object with another at a distance—is a powerful way to achieve quantum information processing. However, quantum mechanics is tethered by a “no-signaling” principle, that is, these correlations cannot be used to transmit information arbitrarily quickly from one point to another. In a paper in Physical Review Letters, Mafalda Almeida at the ICFO-Institut de Ciencies Fotoniques in Barcelona and colleagues at institutions in Spain, Switzerland, the UK, and Belgium follow multiplayer games that obey quantum rules to better understand how no-signaling correlations can, in and of themselves, govern the outcome.''