2001/04/30 by Tilo Eggeling, Karl Gerd H. Vollbrecht, Reinhard F. Werner +1 · 1 citation
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1103/physrevlett.87.257902
3 pages, REVTeX, remark on complete positivity and reference added
arxiv created 2001/05/14 · arxiv updated 2009/12/01
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.