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Communications in Theoretical Physics

Decoherence of high-dimensional orbital angular momentum entanglement in anisotropic turbulence

Xiang Yan, Pengfei Zhang, Cheng Yu Fan, Heng Zhao, Jinghui Zhang, Boyun Wang, Jun Yan Wang

Published Sep 13, 2024• 0 citations
Publisher

Abstract

Abstract The decoherence of high-dimensional orbital angular momentum (OAM) entanglement in the weak scintillation regime has been investigated. In this study, we simulate atmospheric turbulence by utilizing a multiple-phase screen imprinted with anisotropic non-Kolmogorov turbulence. The entanglement negativity and fidelity are introduced to quantify the entanglement of a high-dimensional OAM state. The numerical evaluation results indicate that entanglement negativity and fidelity last longer for a high-dimensional OAM state when the azimuthal mode has a lower value. Additionally, the evolution of higher-dimensional OAM entanglement is significantly influenced by OAM beam parameters and turbulence parameters. Compared to isotropic atmospheric turbulence, anisotropic turbulence has a lesser influence on high-dimensional OAM entanglement.

DOI
10.1088/1572-9494/ad7a60

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