Abstract
We present an efficient scheme for the generation and control of a non-degenerate four-wave mixing (FWM) signal in an N-type inhomogeneously broadened 87Rb atomic system. We observe the propagation dynamics of the generated FWM signal along with the probe pulse under the condition of electromagnetically induced transparency. The FWM signal acquiring the scaled shape of the probe field travels through the medium without changing its shape and intensity. We have also shown that a time-dependent control field permits the storage and retrieval of these optical signals without losing their identity. This work allows us to generate, control, store and retrieve FWM signals of complicated shape.
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