Gouy phase engineering of self-splitting quantum correlations
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arXiv
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| Auteurs principaux: | , , , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| _version_ | 1866909000903163904 |
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| author | Junior, A. L. S. Santos Damaceno, M. Barbosa, A. C. Ribeiro, N. A. Alves, G. B. Ribeiro, P. H. Souto Khoury, A. Z. |
| author_facet | Junior, A. L. S. Santos Damaceno, M. Barbosa, A. C. Ribeiro, N. A. Alves, G. B. Ribeiro, P. H. Souto Khoury, A. Z. |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_26816 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Gouy phase engineering of self-splitting quantum correlations Junior, A. L. S. Santos Damaceno, M. Barbosa, A. C. Ribeiro, N. A. Alves, G. B. Ribeiro, P. H. Souto Khoury, A. Z. Quantum Physics 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. |
| title | Gouy phase engineering of self-splitting quantum correlations |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2604.26816 |