Superactivation of Bound Entanglement

Details Superactivation of Bound Entanglement Superactivation of Bound Entanglement

2000-05-28

arxiv.org/abs/quant-ph/0005117v2

Physics

Quantum Physics

4 pages revtex, resubmitted with improvements after referee

Scientific paper

We show that, in a multi-party setting, two non-distillable (bound-entangled) states tensored together can make a distillable state. This is an example of true superadditivity of distillable entanglement. We also show that unlockable bound-entangled states cannot be asymptotically unentangled, providing the first proof that some states are truly bound-entangled in the sense of being both non-distillable and non-separable asymptotically.

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