Controlling quantum fluctuations by electromagnetic field induced coherences

It is well established that a /spl Lambda/-system under the action of two intense fields and in the absence of collisions ends up in a state known as coherent population trapping state (CPT state). This state has well defined coherence between the two lower levels of the /spl Lambda/-system and has found many different applications. In this paper I demonstrate the utility of this coherence in controlling quantum fluctuations.<
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