Łukasz Pawela, Piotr Gawron, Zbigniew Puchała, Jan Sładkowski
We study the possibility of reversing an action of a quantum channel. Our goal 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 our method using the quantum pseudo-telepathy Magic Square game with noise. Our goal is to move the pseudo-telepathy region to higher noise parameter values. We obtain results showing that it is possible to reverse the action of a noise channel using semidefinite programming.
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http://arxiv.org/abs/1211.1213
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