Enhancing pseudo-telepathy in the magic square game.

Pawela, Lukasz; Gawron, Piotr; Puchała, Zbigniew; Sładkowski, Jan · PLoS One · 2013

basic_science · Level V

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Abstract

We study the possibility of reversing an action of a quantum channel. Our principal objective is to find a specific channel that reverses as accurately as possible an action of a given quantum channel. To achieve this goal we use semidefinite programming. We show the benefits of our method using the quantum pseudo-telepathy Magic Square game with noise. Our strategy is to move the pseudo-telepathy region to higher noise values. We show that it is possible to reverse the action of a noise channel using semidefinite programming.

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