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arXiv · 1003.2393

On the transitional behavior of quantum Gaussian memory channels

C. Lupo·S. Mancini
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Abstract

We address the question of optimality of entangled input states in quantum Gaussian memory channels. For a class of such channels, that can be traced back to the memoryless setting, we state a criterion which relate the optimality of entangled inputs to the symmetry properties of the channels' action. Several examples of channel models belonging to this class are discussed.

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C. Lupo, S. Mancini. 2010-05-17. On the transitional behavior of quantum Gaussian memory channels. https://doi.org/10.1103/physreva.81.052314

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