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  • Open Access

Quantum aberrations: Entangling photons with Zernike polynomials

H. Avetisyan*

G. Nikoghosyan

  • *Contact author: h.avetisyan@yerphi.am

Phys. Rev. A 112, 043714 – Published 15 October, 2025

DOI: https://doi.org/10.1103/dbfr-f46b

Abstract

We introduce Zernike polynomials as a novel degree of freedom for encoding quantum information in the spatial structure of photons. Building on their orthogonality and completeness over the unit disk, we develop a framework for generating, manipulating, and detecting photons in Zernike modes, and propose methods for realizing single-photon and two-photon Zernike wave packets. We demonstrate analytically that two-photon states generated via spontaneous parametric down-conversion exhibit mode entanglement in the Zernike basis, with correlations arising from selection rules enforced by Clebsch-Gordan coefficients. Our results open a new pathway for structured spatial entanglement, complementary to schemes based on Laguerre-Gaussian or Hermite-Gaussian modes, and suggest practical experimental implementations based on holographic modulation and optical Fourier techniques.

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