Abstract
We derive an expression of the interaction between a quantum cavityfield and an ultracold Λ-type three-level atom in which twoupper levels are coupled by a coherent driving field. The effects of thedriving-induced atomic coherence on the atomic emission probability areinvestigated. It is found that, due to the driving-induced atomiccoherence, there are two transition channels for the atom interactingwith the cavity field. Between the two transition channels, there is aquantum interference, which is a destructive interference. Thisdestructive quantum interference suppresses the emission of the atom.The atomic emission probability decreases with the increasing drivingfield.
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