Correlation and entanglement of two-component Bose-Einstein condensates in a double well
Other Condensed Matter
2009-11-11 v2
Abstract
We consider a novel system of two-component atomic Bose-Einstein condensate in a double-well potential. Based on the well-known two-mode approximation, we demonstrate that there are obvious avoided level-crossings when both interspecies and intraspecies interactions of two species are increased. The quantum dynamics of the system exhibits revised oscillating behaviors compared with a single component condensate. We also examine the entanglement of two species. Our numerical calculations show the onset of entanglement can be signed as a violation of Cauchy-Schwarz inequality of second-order cross correlation function. Consequently, we use Von Neumann entropy to quantity the degree of entanglement.
Keywords
Cite
@article{arxiv.cond-mat/0512522,
title = {Correlation and entanglement of two-component Bose-Einstein condensates in a double well},
author = {Weibin Li and Wenxing Yang and Xiaotao Xie and Jiahua Li and Xiaoxue Yang},
journal= {arXiv preprint arXiv:cond-mat/0512522},
year = {2009}
}