Gouy phase engineering of self-splitting quantum correlations
Quantum Physics
2026-04-30 v1
Abstract
In this work, we demonstrate the effect of self-splitting spatial quantum correlations induced by Gouy phase engineering. In the process of spontaneous parametric down conversion the pump beam is structured with a mode superposition that produces a dynamical splitting and recombination of the light beam. This structure is transferred to the quantum correlations between signal and idler photons. As a result the joint two-photon probability distribution propagates like a self-splitting and recombining light beam, implementing a Mach-Zehnder-like interferometer. We observe heralded single-photon interference and two-photon NOON state interference. These results open new avenues for applications in quantum metrology.
Cite
@article{arxiv.2604.26816,
title = {Gouy phase engineering of self-splitting quantum correlations},
author = {A. L. S. Santos Junior and M. Damaceno and A. C. Barbosa and N. A. Ribeiro and G. B. Alves and P. H. Souto Ribeiro and A. Z. Khoury},
journal= {arXiv preprint arXiv:2604.26816},
year = {2026}
}
Comments
6 pages, 7 figures