Entanglement and nonlocality of one- and two-mode combination squeezed state
Abstract
We investigate the entanglement and nonlocality properties of one- and two-mode combination squeezed vacuum state (OTCSS, with two-parameter lamda and gamma) by analyzing the logarithmic negativity and the Bell's inequality. It is found that this state exhibits larger entanglement than that of the usual two-mode squeezed vacuum state (TSVS), and that in a certain regime of lamda, the violation of Bell's inequality becomes more obvious, which indicates that the nonlocality of OTCSS can be stronger than that of TSVS. As an application of OTCSS, the quantum teleportaion is examined, which shows that there is a region spanned by lamda and gamma in which the fidelity of OTCSS channel is larger than that of TSVS.
Keywords
Cite
@article{arxiv.1008.5253,
title = {Entanglement and nonlocality of one- and two-mode combination squeezed state},
author = {Li-yun Hu and Xue-xiang Xu and Qin Guo and Hong-yi Fan},
journal= {arXiv preprint arXiv:1008.5253},
year = {2010}
}
Comments
15 pages, 7 figures, accepted by Optics communications