Entanglement and the SU(2) phase states in atomic systems

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.

10 pages, 1 figure

References in corpus (4)

• Experimental long-lived entanglement of two macroscopic objects
• All multipartite Bell correlation inequalities for two dichotomic observables per site
• Four Photon Entanglement from Down Conversion
• Entangled States and Local Measurements

Cited by in corpus (7)

• Coherent states, entanglement, and geometric invariant theory
• Quantification of entanglement via uncertainties
• Robust Entanglement in Atomic Systems via Lambda-Type Processes
• Entanglement, local measurements, and symmetry
• General entanglement
• Entanglement of a Single Spin-1 Object: An Example of Ubiquitous Entanglement
• Easy Monitored Entangled States