Spontaneous parametric down conversion of vector optical vortices
Year: 2026
Type: conference-paper
Abstract: This paper presents a theoretical model of spontaneous parametric down conversion of quantum vector optical vortices with spatially inhomogeneous polarization. It is shown that for fields with spatially inhomogeneous polarization, there exists a relationship between the orbital angular momentum of light and the helical topological charge of polarization. It is established that in the process of spontaneous parametric down conversion of vector optical vortices, the law of conservation of topological charge holds. Control of the polarization and spatial structure of the pump allows for selective generation of entangled states, opening prospects for the development of quantum algorithms in discrete variables using the structural resource of vector vortices.
Authors: V.A. Leonov, E.A. Vashukevich
Institution: St Petersburg University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7171987841