Spatial dependent of the new generated light via Fano-interference in a quantum well nanostructure

Abstract In this letter, we will study the spatially dependent of the new generated light via Fano interference in a quantum well nanostructure. We will show analytically that by Fano-type interference the new light can be generated when the weak probe light propagates through the medium. We will study the efficiency of the new generated light for different strengths of the Fano-interference. We will also consider the condition when the probe light becomes optical vortex light which can carry the orbital angular momentum (OAM). By controlling the OAM of light, we will study the spatial dependence of the absorption spectrum of the generated light. Our proposed model may have potential application in the future quantum information science based on semiconductor quantum well nanostructures.