Selective Deflection of Polarized Light Via Coherently Driven Four-Level Atoms in a Double-Λ Configuration

We study the interaction of a weak probe field, having two circular polarized components, i.e., sigma(-) and sigma(+) polarization, with an optically dense medium of four-level atoms in a double-Lambda configuration, which is mediated by the electromagnetically induced transparency with a polarized control light with spatially in homogeneous profile. We analyse the deflection of the polarized probe light and we find that we can selectively determine which circular component will be deflected after the polarized probe light enters the atom medium via adjusting the polarization and detuning of the control field.