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

Year: 2019

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

Autors Affiliation: Univ Pisa, Dipartimento Fis E Fermi, Largo Bruno Pontecorvo 3, I-56127 Pisa, Italy; CNR, INO, Via G Moruzzi 1, I-56124 Pisa, Italy; Novosibirsk State Univ, Rzhanov Inst Semicond Phys SB RAS, Novosibirsk 630090, Russia; Novosibirsk State Univ, Novosibirsk 630090, Russia; Novosibirsk State Tech Univ, Novosibirsk 630072, Russia

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. Journal/Review: PHYSICAL REVIEW A

Volume: 100 (3)      Pages from: 030501-1  to: 030501-6

More Information: We thank Thomas Gallagher, Joszef Fortagh, Markus Greiner, David Petrosyan, Nikola Sibali ? c, Levi Schachter, and Darrick Chang for discussions, and Alessandro Tredicucci and Giorgio Carelli for the loan of microwave equipment. This work was funded by the H2020-FETPROACT-2014 Grant No. 640378 (RYSQ). I.I.R. and I.I.B. were supported by the Russian Foundation for Basic Research under Grant No. 1702-00987 (for lifetime calculations), by the Russian Science Foundation under Grant No. 18-12-00313 (for multistep transitions induced by blackbody radiation), and by Novosibirsk State University.
KeyWords: Rydberg atom, Lifetime measurement, Blackbody radiation
DOI: 10.1103/PhysRevA.100.030501

Citations: 17
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