Bulletin of the American Physical Society
53rd Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Volume 67, Number 7
Monday–Friday, May 30–June 3 2022; Orlando, Florida
Session N01: Poster Session II (4:00-6:00pm, EDT)
4:00 PM,
Wednesday, June 1, 2022
Room: Grand Ballroom C
Abstract: N01.00131 : Suppression of Raman interaction due to destructive interference in alkali atoms*
Presenter:
Arina Tashchilina
(University of Alberta)
Authors:
Arina Tashchilina
(University of Alberta)
Evgeny Moiseev
(Kazan Quantum Center, Kazan National Research Technical University, Russia)
Logan W Cooke
(Univ of Alberta)
Joseph Lindon
(Univ of Alberta)
Lindsay J LeBlanc
(Alberta)
The conventional three-level effective theory manifests that the fidelity of the Raman operation grows inversely proportional to the single photon detuning. In our work we show that this approximation does not always hold for all alkali atoms due to their multi-level structure. The destructive interference of the hyperfine sub-levels could fully suppress the Raman interaction at large detunings leaving us with some finite optimal fidelity in comparison to asymptotically ideal theoretical case. We use a formalism based on Clebsch-Gordan coefficients and rotational symmetries of atoms, which allows us to generalize our results to all alkali atoms. We experimentally show the effect on Rb-87 and discuss how to circumvent the problem.
*NSERC, Canada Foundation for Innovation, Alberta Innovates, and the Government of AlbertaAuthors appreciate support within framework project # 00075-02-2020-051/1
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