Line shapes and time dynamics of the Förster resonances between two Rydberg atoms in a time-varying electric field

E. A. Yakshina, D. B. Tretyakov, I. I. Beterov, V. M. Entin, C. Andreeva, A. Cinins, A. Markovski, Z. Iftikhar, Aigars Ekers, I. I. Ryabtsev

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


The observation of the Stark-tuned Förster resonances between Rydberg atoms excited by narrowband cw laser radiation requires usage of a Stark-switching technique in order to excite the atoms first in a fixed electric field and then to induce the interactions in a varied electric field, which is scanned across the Förster resonance. In our experiments with a few cold Rb Rydberg atoms, we have found that the transients at the edges of the electric pulses strongly affect the line shapes of the Förster resonances, since the population transfer at the resonances occurs on a time scale of ∼100 ns, which is comparable with the duration of the transients. For example, a short-term ringing at a certain frequency causes additional radio-frequency-assisted Förster resonances, while nonsharp edges lead to asymmetry. The intentional application of the radio-frequency field induces transitions between collective states, whose line shape depends on the interaction strengths and time. Spatial averaging over the atom positions in a single interaction volume yields a cusped line shape of the Förster resonance. We present a detailed experimental and theoretical analysis of the line shape and time dynamics of the Stark-tuned Förster resonances Rb(nP3/2)+Rb(nP3/2)→Rb(nS1/2)+Rb([n+1]S1/2) for two Rb Rydberg atoms interacting in a time-varying electric field.
Original languageEnglish (US)
JournalPhysical Review A
Issue number4
StatePublished - Oct 21 2016

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: This work was supported by the RFBR Grants No. 14-02-00680 and No. 16-02-00383, the Russian Science Foundation Grant No. 16-12-00028 (for laser excitation of Rydberg states), the Siberian Branch of the Russian Academy of Sciences, the EU FP7-PEOPLE-2009-IRSES Project COLIMA, and the Novosibirsk State University.


Dive into the research topics of 'Line shapes and time dynamics of the Förster resonances between two Rydberg atoms in a time-varying electric field'. Together they form a unique fingerprint.

Cite this