Non-Markovian dynamics in a dense potassium vapor.
Transient four-wave mixing experiments on a dense potassium vapor, which has a dephasing time long compared to the collision duration, reveal distinct signatures of non-Markovian dynamics. Theoretical fits assuming stochastic fluctuation of the excited-state frequencies confirm that the two-time correlation function has a finite temporal width.
Lorenz
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JILA, University of Colorado and National Institute of Standards and Technology, Boulder, 80309-0440, USA.
Cundiff
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