Efficient polarization beam splitter based on the optimized stationary light pulse

A tripod-double M type atomic system is proposed for generating stationary light pulse (SLP) encoded in degree of freedom of polarization, and realizing configurable polarization beam splitter through the active operation of the controlling fields and the additional intensity-modulated weak microwave fields. Compared to the previous work [Phys. Rev. A, 100 (2019) 013844], the present one has the following advantages: (1) the generated SLP and the retrieved signal field can be amplified or decreased in a controllable manner, (2) beam-splitting ratio of the left and the right circularly polarized components can be flexibly and continuously configurable in a wide range, and (3) the frequency and the polarization state of the input signal field can be converted. The current scheme, integrating multiple functions and showing excellent performance, may find promising applications in all-optical information processing.