Distillability via protocols respecting the positivity of partial transpose

Abstract

We show that all quantum states that do not have a positive partial transpose are distillable via channels, which preserve the positivity of the partial transpose. The question whether NPT bound entanglement exist is therefore closely related to the connection between the set of separable superoperators and PPT-preserving maps.

3 pages, REVTeX, remark on complete positivity and reference added

Cited by in corpus (44)

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• Activation of Nonmonogamous Multipartite Quantum States
• Computable entanglement cost under positive partial transpose operations
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• Bound entanglement and distillability of multipartite quantum systems
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