Irreversibility in Asymptotic Manipulations of Entanglement

G. Vidal, J. I. Cirac
2001 Physical Review Letters  
We show that the process of entanglement distillation is irreversible by showing that the entanglement cost of a bound entangled state is finite. Such irreversibility remains even if extra pure entanglement is loaned to assist the distillation process.
doi:10.1103/physrevlett.86.5803 pmid:11415362 fatcat:ppf7fuoianhxla7qds7zsx363a