https://doi.org/10.1140/epjp/s13360-022-03631-5
Regular Article
Electromagnetically induced transparencies with two transverse Bose–Einstein condensates in a four-mirror cavity
1
Department of Physics, Zhejiang Normal University, 321004, Jinhua, China
2
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, 100190, Beijing, China
3
School of Physical Sciences, University of Chinese Academy of Sciences, 100190, Beijing, China
4
Songshan Lake Materials Laboratory, 523808, Dongguan, Guangdong, China
Received:
21
October
2022
Accepted:
25
December
2022
Published online:
16
January
2023
We investigate electromagnetically induced transparencies with two transverse Bose–Einstein condensates in four-mirror optical cavity, driven by a strong pump laser and a weak probe laser. The cavity mode, after getting split from beam splitter, interacts with two independent Bose–Einstein condensates transversely trapped in the arms of the cavity along x-axis and y-axis. The interaction of intra-cavity optical mode excites momentum side modes in Bose–Einstein condensates, which then mimic as two atomic mirrors coupled through cavity field. We show that the probe field photons transition through the atomic mirrors yields to two coupled electromagnetically induced transparency windows, which only exist when both atomic states are coupled with the cavity. Further, the strength of these novel electromagnetically induced transparencies gets increased with an increase in atom-cavity coupling. Furthermore, we investigate the behavior of Fano resonances and dynamics of fast and slow light. We illustrate that the Fano line shapes and dynamics of slow light can be enhanced by strengthening the interaction between atomic states and cavity mode. Our findings not only contribute to the quantum nonlinear optics of complex systems but also provide a platform to test multidimensional atomic states in a single system.
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
