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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2026
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| Accès en ligne: | https://arxiv.org/abs/2604.17404 |
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| _version_ | 1866910157343031296 |
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| author | Bégoc, Bleuenn Singh, Sukhjit P. Cichelli, Giovanni Franco, Roberto Morsch, Oliver |
| author_facet | Bégoc, Bleuenn Singh, Sukhjit P. Cichelli, Giovanni Franco, Roberto Morsch, Oliver |
| contents | We report experimental results on Rydberg facilitation, whereby Rydberg levels can be excited off-resonantly in the presence of a nearby Rydberg atom because of Rydberg-Rydberg interactions, for high-lying $S$, $P$ and $D$ levels in rubidium. Facilitation is detected both through an enhancement of the number of excited atoms for off-resonant excitation (either blue or red detuning) and a positive Mandel $Q$ parameter indicating correlated excitation events (super-Poissonian counting statistics). We also calculate the pair-state potentials for the Rydberg states involved and find that our experimental results agree with the expected facilitation conditions for repulsive potentials (blue detuning) and attractive potentials (red detuning), with $P$ and $D$ states exhibiting facilitation on both sides of the resonance. Finally, we investigate inter-state facilitation between two different Rydberg levels (70 $S$ and 70 $P$). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_17404 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Observation of intrastate and interstate facilitation between Rydberg S, P and D levels Bégoc, Bleuenn Singh, Sukhjit P. Cichelli, Giovanni Franco, Roberto Morsch, Oliver Atomic Physics We report experimental results on Rydberg facilitation, whereby Rydberg levels can be excited off-resonantly in the presence of a nearby Rydberg atom because of Rydberg-Rydberg interactions, for high-lying $S$, $P$ and $D$ levels in rubidium. Facilitation is detected both through an enhancement of the number of excited atoms for off-resonant excitation (either blue or red detuning) and a positive Mandel $Q$ parameter indicating correlated excitation events (super-Poissonian counting statistics). We also calculate the pair-state potentials for the Rydberg states involved and find that our experimental results agree with the expected facilitation conditions for repulsive potentials (blue detuning) and attractive potentials (red detuning), with $P$ and $D$ states exhibiting facilitation on both sides of the resonance. Finally, we investigate inter-state facilitation between two different Rydberg levels (70 $S$ and 70 $P$). |
| title | Observation of intrastate and interstate facilitation between Rydberg S, P and D levels |
| topic | Atomic Physics |
| url | https://arxiv.org/abs/2604.17404 |