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EnglishWe demonstrate a hybrid method based on field ionization and state-selective deexcitation capable of measuring the lifetimes of high-lying Rydberg levels. For nS Rydberg states of Rb atoms with principal quantum number 60≤n≤88, we measure both the lifetimes of single target states and those of the ensembles of Rydberg states populated via blackbody-radiation-induced transitions. We find good overall agreement with numerical calculations of the expected lifetimes in both cases. However, for the target-state lifetimes, we find a local deviation towards shorter lifetimes for states around n=72, which we interpret as a signature of a modified blackbody spectrum in the finite volume in which our experiments take place.
| Autori interni: | ||
| Autori: | Archimi, M.; Simonelli, C.; Di Virgilio, L.; Greco, A.; Ceccanti, M.; Arimondo, E.; Ciampini, D.; Ryabtsev, I. I.; Beterov, I. I.; Morsch, O. | |
| Titolo: | Measurements of single-state and state-ensemble lifetimes of high-lying Rb Rydberg levels | |
| Anno del prodotto: | 2019 | |
| Abstract: | We demonstrate a hybrid method based on field ionization and state-selective deexcitation capable of measuring the lifetimes of high-lying Rydberg levels. For nS Rydberg states of Rb atoms with principal quantum number 60≤n≤88, we measure both the lifetimes of single target states and those of the ensembles of Rydberg states populated via blackbody-radiation-induced transitions. We find good overall agreement with numerical calculations of the expected lifetimes in both cases. However, for the target-state lifetimes, we find a local deviation towards shorter lifetimes for states around n=72, which we interpret as a signature of a modified blackbody spectrum in the finite volume in which our experiments take place. | |
| Digital Object Identifier (DOI): | 10.1103/PhysRevA.100.030501 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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