Left-to-right and right-to-left switching of a unidirectional reflection
Left-to-right and right-to-left switching of a unidirectional reflection
We study the effect of unidirectional reflection in the bilayer optical model with the balanced loss and gain terms. It was found that if the impedances characterizing the scattering part are different from those describing the leads, an effect of switching of unidirectional reflection emerges. In this case the vanishing …