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

Higgins, Clare R. and Hughes, Ifan G. (2021) 'Electromagnetically induced transparency in a V-system with 87Rb vapor in the hyperfine Paschen–Back regime.', Journal of Physics B: Atomic, Molecular and Optical Physics, 54 (16). p. 165403.


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.

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Publisher statement:Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Date accepted:24 August 2021
Date deposited:20 September 2021
Date of first online publication:14 September 2021
Date first made open access:20 September 2021

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