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Coherent population trapping in quantized light field

A. V. Taichenachev·A. M. Tumaikin·V. I. Yudin
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Abstract

A full quantum treatment of coherent population trapping (CPT) is given for a system of resonantly coupled atoms and electromagnetic field. We develop a regular analytical method of the construction of generalized dark states (GDS). It turns out that GDS do exist for all optical transitions $F_g\to F_e$, including bright transitions $F\to F+1$ and $F''\to F''$ with $F''$ a half-integer, for which the CPT effect is absent in a classical field. We propose an idea to use an optically thick medium with a transition $F''\to F''$ with $F'' \ge 3/2$ a half-integer as a ''quantum filter'', which transmits only a quantum light.

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A. V. Taichenachev, A. M. Tumaikin, V. I. Yudin. 2005-05-23. Coherent population trapping in quantized light field. https://doi.org/10.1209/epl%2Fi2005-10277-9

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