Electromagnetically induced transparency in a V-system with 87Rb vapor in the hyperfine Paschen–Back regime

Higgins, Clare R.; Hughes, Ifan G.

Abstract

We observe electromagnetically induced transparency (EIT) in a V-system in a thermal rubidium-87 vapour in the hyperfine Paschen-Back regime, realised with a 0.6 T axial magnetic field. In this regime energy levels are no longer degenerate and EIT features from different initial states are distinct, which we show produces a much cleaner feature than without a magnetic field. We compare our results to a model using the time-dependent Lindblad master equation, and having averaged over a distribution of interaction times, see good qualitative agreement for a range of pump Rabi frequencies. Excited state decay into both ground states is shown to play a prominent role in the generation of the transparency feature, which arises mainly due to transfer of population into the ground state not coupled by the probe beam. We use the model to investigate the importance of coherence in this feature, showing that its contribution is more significant at smaller pump Rabi frequencies.

Citation

Higgins, C. R., & Hughes, I. G. (2021). Electromagnetically induced transparency in a V-system with 87Rb vapor in the hyperfine Paschen–Back regime. Optics Letters, 54(16), Article 165403. https://doi.org/10.1088/1361-6455/ac20be

• Journal Article Type: Article
• Acceptance Date: Aug 24, 2021
• Online Publication Date: Sep 14, 2021
• Publication Date: 2021
• Deposit Date: Apr 21, 2021
• Publicly Available Date: Sep 20, 2021
• Journal: Journal of Physics B: Atomic, Molecular and Optical Physics
• Print ISSN: 0146-9592
• Electronic ISSN: 1539-4794
• Publisher: Optica
• Peer Reviewed: Peer Reviewed
• Volume: 54
• Issue: 16
• Article Number: 165403
• DOI: https://doi.org/10.1088/1361-6455/ac20be
• Public URL: https://durham-repository.worktribe.com/output/1277037