Asymptotic Manipulations of Entanglement Can Exhibit Genuine Irreversibility
Michał Horodecki, Paweł Horodecki, Ryszard Horodecki · Physical Review Letters · 2000
It is commonly believed that distillation of entanglement can be, in general, irreversible. Perhaps the strongest evidence is constituted by the existence of the bound entangled states. However, even a single example of state exhibiting this irreversibility has not been found so far. We show that for a family of states the process of distillation of entanglement is truly irreversible. These states have a nonzero amount of bound entanglement and, at most, a very small amount of free entanglement.