Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams
Orbital angular momentum (OAM) modes are an important resource used in various branches of quantum science and technology due to their unique helical structure and countably infinite basis. Generating light that simultaneously carries high-order orbital angular momenta and exhibits quantum correlati...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2025-01-01
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| Series: | APL Photonics |
| Online Access: | http://dx.doi.org/10.1063/5.0229802 |
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| author | D. Scharwald L. Gehse P. R. Sharapova |
| author_facet | D. Scharwald L. Gehse P. R. Sharapova |
| author_sort | D. Scharwald |
| collection | DOAJ |
| description | Orbital angular momentum (OAM) modes are an important resource used in various branches of quantum science and technology due to their unique helical structure and countably infinite basis. Generating light that simultaneously carries high-order orbital angular momenta and exhibits quantum correlations is a challenging task. In this work, we present a theoretical approach to the generation of correlated Schmidt modes carrying OAM via parametric down-conversion (PDC) in cascaded nonlinear systems (nonlinear interferometers) pumped by Laguerre–Gaussian beams. We demonstrate how the number of generated modes and their population can be controlled by varying the pump parameters, the gain of the PDC process, and the distance between the crystals. We investigate the angular displacement measurement uncertainty of these interferometers and demonstrate that it can overcome the classical shot noise limit. |
| format | Article |
| id | doaj-art-81b11ab2faef4ec093e597d0db1e5b31 |
| institution | Kabale University |
| issn | 2378-0967 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | APL Photonics |
| spelling | doaj-art-81b11ab2faef4ec093e597d0db1e5b312025-02-03T16:36:22ZengAIP Publishing LLCAPL Photonics2378-09672025-01-01101016112016112-2210.1063/5.0229802Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beamsD. Scharwald0L. Gehse1P. R. Sharapova2Department of Physics, Paderborn University, Warburger Straße 100, 33098 Paderborn, GermanyDepartment of Physics, Paderborn University, Warburger Straße 100, 33098 Paderborn, GermanyDepartment of Physics, Paderborn University, Warburger Straße 100, 33098 Paderborn, GermanyOrbital angular momentum (OAM) modes are an important resource used in various branches of quantum science and technology due to their unique helical structure and countably infinite basis. Generating light that simultaneously carries high-order orbital angular momenta and exhibits quantum correlations is a challenging task. In this work, we present a theoretical approach to the generation of correlated Schmidt modes carrying OAM via parametric down-conversion (PDC) in cascaded nonlinear systems (nonlinear interferometers) pumped by Laguerre–Gaussian beams. We demonstrate how the number of generated modes and their population can be controlled by varying the pump parameters, the gain of the PDC process, and the distance between the crystals. We investigate the angular displacement measurement uncertainty of these interferometers and demonstrate that it can overcome the classical shot noise limit.http://dx.doi.org/10.1063/5.0229802 |
| spellingShingle | D. Scharwald L. Gehse P. R. Sharapova Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams APL Photonics |
| title | Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams |
| title_full | Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams |
| title_fullStr | Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams |
| title_full_unstemmed | Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams |
| title_short | Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams |
| title_sort | schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with laguerre gaussian beams |
| url | http://dx.doi.org/10.1063/5.0229802 |
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