Physics – Quantum Physics
Scientific paper
2011-01-03
Physics
Quantum Physics
Minor updates
Scientific paper
In a recent paper, Junge and Palazuelos presented two two-player games exhibiting interesting properties. In their first game, entangled players can perform notably better than classical players. The quantitative gap between the two cases is remarkably large, especially as a function of the number of inputs to the players. In their second game, entangled players can perform notably better than players that are restricted to using a maximally entangled state (of arbitrary dimension). This was the first game exhibiting such a behavior. The analysis of both games is heavily based on non-trivial results from Banach space theory and operator space theory. Here we present two games exhibiting a similar behavior, but with proofs that are arguably simpler, using elementary probabilistic techniques and standard quantum information arguments. Our games also give better quantitative bounds.
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