Quantum-like nonlinear interferometry with frequency-engineered classical light
Abstract Quantum interferometry methods exploit quantum resources, such as photonic entanglement, to enhance phase estimation beyond classical limits. Nonlinear optics has served as a workhorse for the generation of entangled photon pairs, ensuring both energy and phase conservation, but at the cost...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-07-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-025-09533-7 |
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| author | Romain Dalidet Anthony Martin Grégory Sauder Laurent Labonté Sébastien Tanzilli |
| author_facet | Romain Dalidet Anthony Martin Grégory Sauder Laurent Labonté Sébastien Tanzilli |
| author_sort | Romain Dalidet |
| collection | DOAJ |
| description | Abstract Quantum interferometry methods exploit quantum resources, such as photonic entanglement, to enhance phase estimation beyond classical limits. Nonlinear optics has served as a workhorse for the generation of entangled photon pairs, ensuring both energy and phase conservation, but at the cost of limited rate and degraded signal-to-noise ratio compared to laser-based interferometry approaches. We present a “quantum-like” nonlinear optical method that reaches super-resolution in classical detection regime. This is achieved by replacing photon-pairs by coherent states of light, mimicking quantum properties through classical nonlinear optics processes. Our scheme utilizes two high-brightness lasers. This results in a substantially greater signal-to-noise ratio compared to its quantum counterpart. Such an approach paves the way to significantly reduced acquisition times, providing a pathway to explore signals across a broader range of bandwidth. The need to increase the frequency bandwidth of the quantum sensor significantly motivates the potential applications of this pathway. |
| format | Article |
| id | doaj-art-5c5b3db951e645698ae787f85d559859 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-5c5b3db951e645698ae787f85d5598592025-08-20T03:45:49ZengNature PortfolioScientific Reports2045-23222025-07-011511910.1038/s41598-025-09533-7Quantum-like nonlinear interferometry with frequency-engineered classical lightRomain Dalidet0Anthony Martin1Grégory Sauder2Laurent Labonté3Sébastien Tanzilli4Université Côte d’Azur, CNRS, Institut de physique de NiceUniversité Côte d’Azur, CNRS, Institut de physique de NiceUniversité Côte d’Azur, CNRS, Institut de physique de NiceUniversité Côte d’Azur, CNRS, Institut de physique de NiceUniversité Côte d’Azur, CNRS, Institut de physique de NiceAbstract Quantum interferometry methods exploit quantum resources, such as photonic entanglement, to enhance phase estimation beyond classical limits. Nonlinear optics has served as a workhorse for the generation of entangled photon pairs, ensuring both energy and phase conservation, but at the cost of limited rate and degraded signal-to-noise ratio compared to laser-based interferometry approaches. We present a “quantum-like” nonlinear optical method that reaches super-resolution in classical detection regime. This is achieved by replacing photon-pairs by coherent states of light, mimicking quantum properties through classical nonlinear optics processes. Our scheme utilizes two high-brightness lasers. This results in a substantially greater signal-to-noise ratio compared to its quantum counterpart. Such an approach paves the way to significantly reduced acquisition times, providing a pathway to explore signals across a broader range of bandwidth. The need to increase the frequency bandwidth of the quantum sensor significantly motivates the potential applications of this pathway.https://doi.org/10.1038/s41598-025-09533-7 |
| spellingShingle | Romain Dalidet Anthony Martin Grégory Sauder Laurent Labonté Sébastien Tanzilli Quantum-like nonlinear interferometry with frequency-engineered classical light Scientific Reports |
| title | Quantum-like nonlinear interferometry with frequency-engineered classical light |
| title_full | Quantum-like nonlinear interferometry with frequency-engineered classical light |
| title_fullStr | Quantum-like nonlinear interferometry with frequency-engineered classical light |
| title_full_unstemmed | Quantum-like nonlinear interferometry with frequency-engineered classical light |
| title_short | Quantum-like nonlinear interferometry with frequency-engineered classical light |
| title_sort | quantum like nonlinear interferometry with frequency engineered classical light |
| url | https://doi.org/10.1038/s41598-025-09533-7 |
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