title: Suppression of decoherence in a wave packet via nonlinear resonance.
abstract: We propose a simple approach for suppressing decoherence of a wave packet excited in an anharmonic oscillator. We show that when a resonant external field forces the oscillator to follow the driving force, motion around the resonant trajectory inside a stable resonant island can be made almost completely immune to the environment. As an example, we study suppression of decoherence due to coupling to thermally populated rotations in vibrational wave packets in a Na2 molecule.
authors.affiliation: Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC, Canada V6T 1Z1.
authors.forename: E A
authors.initials: EA
authors.lastname: Shapiro
authors.forename: I A
authors.initials: IA
authors.lastname: Walmsley
authors.forename: Misha Yu
authors.initials: MY
authors.lastname: Ivanov