Entanglement and the SU(2) phase states in atomic systems
Quantum Physics
2009-11-07 v3
Abstract
We show that a system of 2n identical two-level atoms interacting with n cavity photons manifests entanglement and that the set of entangled states coincides with the so-called SU(2) phase states. In particular, violation of classical realism in terms of the GHZ and GHSH conditions is proved. We discuss a new property of entanglement expressed in terms of local measurements. We also show that generation of entangled states in the atom-photon systems under consideration strongly depends on the choice of initial conditions and that the parasitic influence of cavity detuning can be compensated through the use of Kerr medium.
Cite
@article{arxiv.quant-ph/0202041,
title = {Entanglement and the SU(2) phase states in atomic systems},
author = {M. Ali Can and Alexander A. Klyachko and Alexander S. Shumovsky},
journal= {arXiv preprint arXiv:quant-ph/0202041},
year = {2009}
}
Comments
10 pages, 1 figure