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Photonics and Nanostructures - Fundamentals and Applications

Phase-controlled lateral and rotational photon drag via nonlinear four-wave mixing in semiconductor quantum dots

Hamad Ali, Abul Basit, Ying-jie Zhao, Yanfang Ji

Published May 1, 2026• 0 citations
Publisher
DOI
10.1016/j.photonics.2026.101657

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We propose an arbitrary vector beam (VB) generation scheme in a thin disk-shaped quantum dot (QD) medium considering phonon interaction. The QD biexciton system exhibits the interplay between first- and third-order nonlinear susceptibility between two orthogonal circular polarization transitions. Three QD transitions are coupled with one applied weak and two strong control orbital angular momentum (OAM) carrying fields. Therefore, the applied field experiences absorption, and a new field with the desired OAM is generated via four-wave mixing (FWM). These two orthogonal field superpositions produce VB at the QD medium end. We also demonstrate the polarization rotation of a VB by changing only the relative control field phase. Additionally, we analyze the effect of temperature on the VB generation.
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