Eur. Phys. J. D 65, 587-591 (2011)
https://doi.org/10.1140/epjd/e2011-20450-3

Regular Article

Dynamics of atom-field entanglement in a bimodal cavity

Instituto de Física “Gleb Wataghin”, Universidade Estadual de Campinas - UNICAMP, 13083-859 Campinas, SP, Brazil

^a e-mail: vidiella@ifi.unicamp.br

Received: 1 August 2011
Published online: 25 October 2011

Abstract

In this paper we investigate some aspects of the dynamics and entanglement of bipartite quantum system (atom-quantized field), coupled to a third “external” subsystem (quantized field). We make use of the Raman coupled model; a three-level atom in a lambda configuration interacting with two modes of the quantized cavity field. We consider the far off resonance limit, which allows the derivation of an effective Hamiltonian of a two-level atom coupled to the fields. We also make a comparison with the situation in which one of the modes is treated classically rather than prepared in a quantum field (coherent state).