Abstract
Stochastic dynamics of a laser-driven four-level system serving as a model for a single guest chromophore molecule in an amorphous polymer host is studied. The dynamics of ``slow'' transitions (spectral jumps), accompanied by instantaneous changes in the fluorescence frequency, is simulated on the basis of continuous measurement theory. It is shown that there is an opportunity to control the statistics of ``bright'' and ``dark'' periods by using laser fields to drive molecules having different tunneling rates for the ground and excited electronic states. The effect of population cycling in a four-level system and related effects of local heating or cooling of the environment are discussed.
Published Version
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