Characterization of Distillable and Activable States using Entanglement Witnesses
Preprint
- 31 October 2001
Abstract
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.Keywords
All Related Versions
- Version 1, 2001-10-31, ArXiv
- Published version: Physical Review A, 65 (4), 042327.
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