Characterization of Distillable and Activable States using Entanglement Witnesses

Details Characterization of Distillable and Activable States using Entanglement Witnesses Characterization of Distillable and Activable States using Entanglement Witnesses

2001-10-31

arxiv.org/abs/quant-ph/0110174v1

Phys. Rev. A 65, 042327 (2002)

Physics

Quantum Physics

10 pages, no figures

Scientific paper

10.1103/PhysRevA.65.042327

We introduce a formalism that connections entanglement witnesses and the distillation and activation properties of a state. We apply this formalism to two cases: First, we rederive the results presented in quant-ph/0104095 by Eggeling et al., namely that on copy of any bipartite state with non--positive partial transpose (NPPT) is either distillable, or activable. Second, we show that there exist three--partite NPPT states, with the property that two copies can neither be distilled, nor activated.

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