Inseparability criterion for continuous variable systems
量子物理
2009-10-31 v2
摘要
An inseparability criterion based on the total variance of a pair of Einstein-Podolsky-Rosen type operators is proposed for continuous variable systems. The criterion provides a sufficient condition for entanglement of any two-party continuous variable states. Furthermore, for all the Gaussian states, this criterion turns out to be a necessary and sufficient condition for inseparability.
引用
@article{arxiv.quant-ph/9908056,
title = {Inseparability criterion for continuous variable systems},
author = {Lu-Ming Duan and G. Giedke and J. I. Cirac and P. Zoller},
journal= {arXiv preprint arXiv:quant-ph/9908056},
year = {2009}
}
备注
minor changes in the introduction and refs