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All entangled states are useful for information processing

Ll. Masanes
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Abstract

The question whether all entangled states can be used as a nonclassical resource has remained open so far. Here we provide a conclusive answer to this problem for the case of systems shared by two parties. We show that any entangled state $σ$ can enhance the teleportation power of some other state. This holds even if the state $σ$ is bound entangled.

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Ll. Masanes. 2006-02-01. All entangled states are useful for information processing. https://doi.org/10.1103/physrevlett.96.150501

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