Measurements of single-state and state-ensemble lifetimes of high-lying Rb Rydberg levels

Archimi, M.; Simonelli, C.; Di Virgilio, L.; Greco, A.; Ceccanti, M.; Arimondo, E.; Ciampini, D.; Ryabtsev, I. I.; Beterov, I. I.; Morsch, O.

doi:10.1103/PhysRevA.100.030501

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.

Autori interni:	ARCHIMI, MATTEO Simonelli C. Di Virgilio L. Greco A. Ceccanti M. ARIMONDO, ENNIO CIAMPINI, DONATELLA Ryabtsev I. I. Beterov I. I. Morsch O. mostra contributor esterni nascondi contributor esterni
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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