title: Entangled and disentangled evolution for a single atom in a driven cavity.
abstract: For an atom in an externally driven cavity, we show that special initial states lead to near-disentangled atom-field evolution, and superpositions of these can lead to near maximally entangled states. Somewhat counterintutively, we find that (moderate) spontaneous emission in this system actually leads to a transient increase in entanglement beyond the steady-state value. We also show that a particular field correlation function could be used, in an experimental setting, to track the time evolution of this entanglement.
authors.affiliation: Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USA.
authors.forename: J
authors.initials: J
authors.lastname: Gea-Banacloche
authors.forename: T C
authors.initials: TC
authors.lastname: Burt
authors.forename: P R
authors.initials: PR
authors.lastname: Rice
authors.forename: L A
authors.initials: LA
authors.lastname: Orozco