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Spatially localized optical pumping in Paul traps

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Abstract

Spatially localized optical pumping into energy eigenstates and into a long-living nonabsorbing coherent superposition of the two low-lying metastable states of the Ba+ ion has been observed. The spatial localization is traced to the properties of micromotion in Paul traps. Observed spatial distributions of the laser-induced fluorescence have been qualitatively reproduced by using a model based on the notion of velocity amplitudes and the Brownianmotion model of ion dynamics in the Paul trap.

© 1989 Optical Society of America

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