0110174v1

related topics
{state, states, entangled}
{let, theorem, proof}
{alice, bob, state}
{states, state, optimal}
{operator, operators, space}

Characterization of Distillable and Activable States using Entanglement Witnesses

B. Kraus, M. Lewenstein, J. I. Cirac

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.

oai_identifier:
oai:arXiv.org:quant-ph/0110174
categories:
quant-ph
comments:
10 pages, no figures
doi:
10.1103/PhysRevA.65.042327
arxiv_id:
quant-ph/0110174
journal_ref:
Phys. Rev. A 65, 042327 (2002)
created:
2001-10-31

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