Abstract
Orbital angular momentum (OAM) is an important property of vortex light, which provides a valuable tool to manipulate the light-matter interaction in the study of classical and quantum optics. Here we propose a scheme to generate vortex light fields via four-wave mixing (FWM) in asymmetric semiconductor quantum wells. By tailoring the probe-field and control-field detunings, we can effectively manipulate the helical phase and intensity of the FWM field. Particularly, when probe field and control field have identical detuning, we find that both the absorption and phase twist of the generated FWM field are significantly suppressed. Consequently, the highly efficient vortex FWM is realized, where the maximum conversion efficiency reaches around 50%. Our study provides a tool to transfer vortex wavefronts from input to output fields in an efficient way, which may find potential applications in solid-state quantum optics and quantum information processing.
Highlights
Vortex beams carrying orbital angular momentum (OAM) [1,2] are widely explored for different domains [3,4,5,6,7]
Vortex four-wave mixing (FWM) has been investigated in 85Rb vapor, they found that the phase profile associated with OAM is transferred entirely from the one light to another [14]
For exploring the vortex FWM process, we study the phase and intensity patterns of the FWM field when probe-field detuning ∆p is not equal to control-field detuning ∆c
Summary
Vortex beams carrying orbital angular momentum (OAM) [1,2] are widely explored for different domains [3,4,5,6,7]. The transfer of OAM has been studied in multilevel atomic systems [11,12]. Vortex four-wave mixing (FWM) has been investigated in 85Rb vapor, they found that the phase profile associated with OAM is transferred entirely from the one light to another [14]. High-efficiency vortex FWM generation in SQWs. In comparison with most scenarios in atomic gases [33,34,35,36,37,38] , the major advantages of our scheme are as follows. (ii) By coupling these states with the laser lights, we show that a new light field can be efficiently generated through mixing the input laser light. Our scheme may open up a new perspective for modulating the vortex FWM in a solid device.
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