Non-existence of bipartite bound entanglement with negative partial transposition
Quantum Physics
2009-11-02 v2
Abstract
Bound entanglement with a nonpositive partial transposition (NPT) does not exist. For any NPT entangled state a distillation procedure can be based on a certain number of copies. This number is the minimal Schmidt rank of a pure state needed to witness the NPT entanglement under study.
Keywords
Cite
@article{arxiv.0910.0744,
title = {Non-existence of bipartite bound entanglement with negative partial transposition},
author = {J. Sperling and W. Vogel},
journal= {arXiv preprint arXiv:0910.0744},
year = {2009}
}
Comments
We provide a more sophisticated proof, since we could not overcome the criticism that the used angles are not angles between vectors. Comments are welcome, 2 pages