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Type: Artigo de periódico
Title: Non-conditioned generation of Schrodinger cat states in a cavity
Author: Munhoz, PP
Vidiella-Barranco, A
Abstract: We investigate the dynamics of a two-level atom in a cavity filled with a nonlinear medium. We show that the atom-field detuning delta and the nonlinear parameter chi((3)) may be combined to yield a periodic dynamics, allowing the generation of almost exact superpositions of coherent states (Schroodinger cats). By analysing the atomic inversion and the field purity, we verify that any initial atom-field state is recovered at each revival time, and that a coherent field interacting with an excited atom evolves to a superposition of coherent states at each collapse time. We show that a mixed field state (statistical mixture of two coherent states) evolves towards an almost pure field state as well (Schroodinger cat). We discuss the validity of these results by using the field fidelity and the Wigner function.
Country: Inglaterra
Editor: Taylor & Francis Ltd
Rights: fechado
Identifier DOI: 10.1080/09500340500058116
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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