Abstract
The behavior of the spatial and angular Goos-Hanchen (GH) shifts for the reflected and transmitted probe light beams is theoretically investigated in a fixed geometrical configuration containing the three and then four – level quantum dot nanostructure. It is found that, by adjusting the controllable parameters such as Rabi frequencies of applied fields, the spatial and angular Goos-Hanchen shifts can be controlled containing both of the positive and negative shifts of reflected and transmitted probe light beams. Moreover, we find that the simultaneous superluminal or subluminal light reflected and transmitted probe beams can be obtained through the medium.
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