Distillability via protocols respecting the positivity of partial transpose
Quantum Physics
2009-11-07 v2
Abstract
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.
Cite
@article{arxiv.quant-ph/0104095,
title = {Distillability via protocols respecting the positivity of partial transpose},
author = {Tilo Eggeling and Karl Gerd H. Vollbrecht and Reinhard F. Werner and Michael M. Wolf},
journal= {arXiv preprint arXiv:quant-ph/0104095},
year = {2009}
}
Comments
3 pages, REVTeX, remark on complete positivity and reference added