Suppression of decoherence in a wave packet via nonlinear resonance

被引：21
|
作者：
Shapiro, E. A.
Walmsley, I. A.
Vanov, Misha Yu.
机构：
[1] Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada
[2] Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England
[3] Natl Res Council Canada, Steacie Inst Mol Sci, Ottawa, ON K1A 0R6, Canada
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 05期
关键词：
D O I：
10.1103/PhysRevLett.98.050501
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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 Na-2 molecule.
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页数：4
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