Salvato in:
| Autori principali: | , , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
| Accesso online: | https://arxiv.org/abs/2409.09813 |
| Tags: |
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Sommario:
- Optical parametric amplifiers (OPAs) in traveling wave configuration can generate localized spatial quantum correlations between a signal and an idler beam, a useful resource for quantum imaging. This study focuses on the classical transverse dynamics of the signal and idler beams when they propagate in a generic thick OPA at a nominally small angle. It shows that the beams tend to copropagate while maintaining a fixed separation, a phenomenon that we term hitching. We provide a model for hitching, validated by a numerical simulation, and we provide an experimental demonstration using four-wave mixing (4WM) in a hot atomic vapor. It shows that the OPA gain is the primary influence on the final hitching distance. These results have implications for the generation of multi-spatial-mode squeezed light for quantum imaging applications, where the exact spatial correspondence between the quantum fluctuations of the signal and the idler is of prime importance.