Distillation protocols: Output entanglement and local mutual information

Physics – Quantum Physics

Scientific paper

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4 pages, RevTeX, no figures; v2: presentation improved, results unchanged; v3: published version

Scientific paper

10.1103/PhysRevLett.93.170503

A complementary behavior between local mutual information and average output
entanglement is derived for arbitrary bipartite ensembles. This leads to bounds
on the yield of entanglement in distillation protocols that involve
disinguishing. This bound is saturated in the hashing protocol for
distillation, for Bell-diagonal states.

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