Mixed-state entanglement and distillation: is there a ``bound'' entanglement in nature?
Quantum Physics
2009-10-31 v1
Abstract
It is shown that if a mixed state can be distilled to the singlet form, it must violate partial transposition criterion [A. Peres, Phys. Rev. Lett. 76, 1413 (1996)]. It implies that there are two qualitatively different types of entanglement: ``free'' entanglement which is distillable, and ``bound'' entanglement which cannot be brought to the singlet form useful for quantum communication purposes. Possible physical meaning of the result is discussed.
Keywords
Cite
@article{arxiv.quant-ph/9801069,
title = {Mixed-state entanglement and distillation: is there a ``bound'' entanglement in nature?},
author = {Michal Horodecki and Pawel Horodecki and Ryszard Horodecki},
journal= {arXiv preprint arXiv:quant-ph/9801069},
year = {2009}
}
Comments
RevTeX, 4 pages