Entanglement Sharing in the Two-Atom Tavis-Cummings Model
摘要
Individual members of an ensemble of identical systems coupled to a common probe can become entangled with one another, even when they do not interact directly. We investigate how this type of multipartite entanglement is generated in the context of a system consisting of two two-level atoms resonantly coupled to a single mode of the electromagnetic field. The dynamical evolution is studied in terms of the entanglements in the different bipartite partitions of the system, as quantified by the I-tangle. We also propose a generalization of the so-called residual tangle that quantifies the inherent three-body correlations in our tripartite system. This enables us to completely characterize the phenomenon of entanglement sharing in the case of the two-atom Tavis-Cummings model, a system of both theoretical and experimental interest.
引用
@article{arxiv.quant-ph/0306015,
title = {Entanglement Sharing in the Two-Atom Tavis-Cummings Model},
author = {T. E. Tessier and I. H. Deutsch and A. Delgado and I. Fuentes-Guridi},
journal= {arXiv preprint arXiv:quant-ph/0306015},
year = {2009}
}
备注
11 pages, 4 figures, submitted to PRA, v3 contains corrections to small errors