Quantum Non-locality and Partial Transposition for Continuous-Variable Systems
Quantum Physics
2008-07-25 v2
Abstract
A continuous-variable Bell inequality, valid for an arbitrary number of observers measuring observables with an arbitrary number of outcomes, was recently introduced in [Cavalcanti \emph{et al.}, Phys. Rev. Lett. {\bf 99}, 210405 (2007)]. We prove that any -mode quantum state violating this inequality with quadrature measurements necessarily has a negative partial transposition. Our results thus establish the first link between nonlocality and bound entanglement for continuous-variable systems.
Cite
@article{arxiv.0804.4703,
title = {Quantum Non-locality and Partial Transposition for Continuous-Variable Systems},
author = {Alejo Salles and Daniel Cavalcanti and Antonio Acín},
journal= {arXiv preprint arXiv:0804.4703},
year = {2008}
}
Comments
4 pages, no figures; reference added, minor changes, close to published version