Quantum guessing game reveals insight into stronger-than-quantum correlations
Tuesday, June 22, 2010 - 07:30
in Physics & Chemistry
(PhysOrg.com) -- In information processing, physicists are often in search of ways to turn classical strategies into quantum ones, with the implication that the quantum version is somehow stronger, faster, or more secure than its classical counterpart. However, quantum strategies do not always perform better than classical ones. As a case in point, a new study has compared the strength of classical and quantum correlations in a simple number guessing game and found no difference in performance. Further, the physicists found that a third form of correlations - post-quantum correlations - could outperform both quantum and classical forms.