Isotropic non-locality cannot be distilled

Abstract

We investigate non-locality distillation protocols for isotropic correlations. These correlations are the hardest instances which respect to distillability and only partial results are known about their behaviour under non-locality distillation protocols. We completely resolve this issue by proving that non-locality distillation is impossible for all non-local isotropic correlations.

arXiv commentThis paper has been withdrawn by the author since it crucially depends on arXiv:1105.2513 which is flawed