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Study of EIT resonances in an anti-relaxation coated Rb vapor cell

Bhattarai, Mangesh and Bharti, Vineet and Natarajan, Vasant and Sargsyan, Armen and Sarkisyan, David (2019) Study of EIT resonances in an anti-relaxation coated Rb vapor cell. In: PHYSICS LETTERS A, 383 (1). pp. 91-96.

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Official URL: https://doi.org/10.1016/j.physleta.2018.09.036

Abstract

We study the sign of resonances obtained in electromagnetically induced transparency (EIT). Resonances of both kinds-bright (corresponding to enhanced absorption) and dark (corresponding to reduced absorption)-are obtained when the frequency of a probe beam is scanned. The experimental results, presented earlier, use magnetic sublevels of a hyperfine transition in the D-1 line of Rb-87 along with a magnetic field of 27 G. The atoms are contained in a vapor cell at room temperature, and with anti-relaxation coating on the walls. A quantitative theoretical model, which reproduces the experimental results quite well, is presented for the first time. The model solves the density matrix of the sublevels involved, and uses two regions-one with both the light and magnetic field, and the second without light and just a magnetic field. This ability to have both bright and dark resonances promises applications in sub- and super-luminal propagation of light. (C) 2018 Elsevier B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to ELSEVIER SCIENCE BV
Keywords: Electromagnetically induced transparency; Rb D1 line; Anti-relaxation coating
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Depositing User: Francis Jayakanth
Date Deposited: 10 Feb 2019 08:54
Last Modified: 10 Feb 2019 08:54
URI: http://eprints.iisc.ac.in/id/eprint/61337

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