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arXiv · 1404.0277

Game-theoretic characterization of antidegradable channels

Francesco Buscemi·Nilanjana Datta·Sergii Strelchuk
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Abstract

We introduce a guessing game involving a quantum channel, three parties - the sender, the receiver and an eavesdropper, Eve - and a quantum public side channel. We prove that a necessary and sufficient condition for the quantum channel to be antidegradable, is that Eve wins the game. We thus obtain a complete operational characterization of antidegradable channels in a game-theoretic framework.

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Francesco Buscemi, Nilanjana Datta, Sergii Strelchuk. 2014-09-25. Game-theoretic characterization of antidegradable channels. https://doi.org/10.1063/1.4895918

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