Distillability via protocols respecting the positivity of partial transpose.
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.
Eggeling
T
T
Institut für Mathematische Physik, TU Braunschweig, Mendelssohnstrasse 3, 38106 Braunschweig, Germany. T.Eggeling@tu-bs.de
Vollbrecht
K G
KG
Werner
R F
RF
Wolf
M M
MM