Photonic spin hall shift manipulation at the graphene atomic medium

This study reports the manipulation of photonic spin hall shift at the graphene medium that lies between two mirrors. The incoming probe light engages with a cavity filled with four levels graphene medium. The spin hall shift of the photons is tuned to positive or negative values, depending on the properties of the driving fields. The maximum spin hall shift which lies in − 50 λ ≤ S h p L , R ≤ 50 λ is a function of incidence angle and independent of control field Rabi frequency. The minimum spin hall shift lies in the range ± 17.79 λ ≤ S h p L , R ≤ ± 17.83 λ against the control field Rabi frequency ( | R 1 | = 0 G and 20 G). These findings have significant applications in areas such as sensing technology, quantum computing and optical communication.