# Distillability via protocols respecting the positivity of partial transpose.

@article{Eggeling2001DistillabilityVP, title={Distillability via protocols respecting the positivity of partial transpose.}, author={T. Eggeling and K. Vollbrecht and R. Werner and M. Wolf}, journal={Physical review letters}, year={2001}, volume={87 25}, pages={ 257902 } }

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 bound entangled states with non-positive partial transpose exist is therefore closely related to the connection between the set of separable superoperators and positive partial transpose-preserving maps.

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