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Title: Electromagnetically induced transparency resonances inverted in magnetic field

Abstract

The phenomenon of electromagnetically induced transparency (EIT) is investigated in a Λ-system of the {sup 87}Rb D{sub 1} line in an external transverse magnetic field. Two spectroscopic cells having strongly different values of the relaxation rates γ{sub rel} are used: an Rb cell with antirelaxation coating (L ∼ 1 cm) and an Rb nanometric- thin cell (nanocell) with a thickness of the atomic vapor column L = 795 nm. For the EIT in the nanocell, we have the usual EIT resonances characterized by a reduction in the absorption (dark resonance (DR)), whereas for the EIT in the Rb cell with an antirelaxation coating, the resonances demonstrate an increase in the absorption (bright resonances (BR)). We suppose that such an unusual behavior of the EIT resonances (i.e., the reversal of the sign from DR to BR) is caused by the influence of an alignment process. The influence of alignment strongly depends on the configuration of the coupling and probe frequencies as well as on the configuration of the magnetic field.

Authors:
;  [1]; ;  [2];  [3];  [4];  [5]
  1. National Academy of Sciences of Armenia, Institute for Physical Research (Armenia)
  2. Université de Bourgogne-Dijon, Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR CNRS (France)
  3. Bulgarian Academy of Sciences, Institute of Electronics (Bulgaria)
  4. Bar-Ilan University Ramat Gan, Department of Chemistry (Israel)
  5. University of Latvia, Department of Physics (Latvia)
Publication Date:
OSTI Identifier:
22471944
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Experimental and Theoretical Physics; Journal Volume: 121; Journal Issue: 6; Other Information: Copyright (c) 2015 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION; COUPLING; ELECTROMAGNETISM; MAGNETIC FIELDS; NANOSTRUCTURES; OPACITY; RELAXATION; RESONANCE; RUBIDIUM 87; VAPORS

Citation Formats

Sargsyan, A., Sarkisyan, D., E-mail: davsark@yahoo.com, E-mail: david@ipr.sci.am, Pashayan-Leroy, Y., Leroy, C., Cartaleva, S., Wilson-Gordon, A. D., and Auzinsh, M.. Electromagnetically induced transparency resonances inverted in magnetic field. United States: N. p., 2015. Web. doi:10.1134/S1063776115130142.
Sargsyan, A., Sarkisyan, D., E-mail: davsark@yahoo.com, E-mail: david@ipr.sci.am, Pashayan-Leroy, Y., Leroy, C., Cartaleva, S., Wilson-Gordon, A. D., & Auzinsh, M.. Electromagnetically induced transparency resonances inverted in magnetic field. United States. doi:10.1134/S1063776115130142.
Sargsyan, A., Sarkisyan, D., E-mail: davsark@yahoo.com, E-mail: david@ipr.sci.am, Pashayan-Leroy, Y., Leroy, C., Cartaleva, S., Wilson-Gordon, A. D., and Auzinsh, M.. 2015. "Electromagnetically induced transparency resonances inverted in magnetic field". United States. doi:10.1134/S1063776115130142.
@article{osti_22471944,
title = {Electromagnetically induced transparency resonances inverted in magnetic field},
author = {Sargsyan, A. and Sarkisyan, D., E-mail: davsark@yahoo.com, E-mail: david@ipr.sci.am and Pashayan-Leroy, Y. and Leroy, C. and Cartaleva, S. and Wilson-Gordon, A. D. and Auzinsh, M.},
abstractNote = {The phenomenon of electromagnetically induced transparency (EIT) is investigated in a Λ-system of the {sup 87}Rb D{sub 1} line in an external transverse magnetic field. Two spectroscopic cells having strongly different values of the relaxation rates γ{sub rel} are used: an Rb cell with antirelaxation coating (L ∼ 1 cm) and an Rb nanometric- thin cell (nanocell) with a thickness of the atomic vapor column L = 795 nm. For the EIT in the nanocell, we have the usual EIT resonances characterized by a reduction in the absorption (dark resonance (DR)), whereas for the EIT in the Rb cell with an antirelaxation coating, the resonances demonstrate an increase in the absorption (bright resonances (BR)). We suppose that such an unusual behavior of the EIT resonances (i.e., the reversal of the sign from DR to BR) is caused by the influence of an alignment process. The influence of alignment strongly depends on the configuration of the coupling and probe frequencies as well as on the configuration of the magnetic field.},
doi = {10.1134/S1063776115130142},
journal = {Journal of Experimental and Theoretical Physics},
number = 6,
volume = 121,
place = {United States},
year = 2015,
month =
}
  • We study the dependence of electromagnetically induced transparency (EIT) resonance amplitudes on the external magnetic field direction in a linearly polarized bichromatic light (lin||lin) configuration in {sup 87}Rb vapor. We demonstrate that all seven resolvable EIT resonances exhibit maxima or minima at certain orientations of the laser polarization relative to the wave vector and magnetic field. This effect can be used for the development of a high-precision EIT vector magnetometer.
  • The effect of incident light field ellipticity on the electromagnetically induced absorption (EIA) and electromagnetically induced transparency (EIT) resonances has been studied experimentally and computationally in Hanle configuration with longitudinal and transverse magnetic fields. We identify the Zeeman coherences that influence the resonance profile and study the role of coherence-transfer from excited to ground state via spontaneous emission as a function of ellipticity for the F{sub g}=2{yields}F{sub e}=3 transition of {sup 87}Rb. The EIT resonance observed with the light field locked on the F{sub g}=1{yields}F{sub e}=2 transition of {sup 87}Rb is an influence of the nearby F{sub g}=1{yields}F{sub e}=0 closedmore » and F{sub g}=1{yields}F{sub e}=1 open transitions. With increase in ellipticity the observed EIA and EIT resonances diminish in amplitude for a longitudinal magnetic field and are enhanced for a transverse magnetic field. We computationally account for these observations and discuss the factors that influence the EIA and EIT resonance amplitudes as a function of ellipticity and show that for a transverse field scan the ellipticity dependence of the EIA resonance amplitude can be accounted for without invoking the Doppler effect unlike for a longitudinal field scan. We also show that the maximum in the EIA resonance amplitude obtained for nonzero ellipticities with a longitudinal magnetic field depends on the closedness of the atomic system.« less
  • In this paper, we numerically and experimentally demonstrate electromagnetically induced transparency (EIT)-like spectral response with magnetic resonance near field coupling to electric resonance. Six split-ring resonators and a cut wire are chosen as the bright and dark resonator, respectively. An EIT-like transmission peak located between two dips can be observed with incident magnetic field excitation. A large delay bandwidth product (0.39) is obtained, which has potential application in quantum optics and communications. The experimental results are in good agreement with simulated results.
  • We study the phenomenon of electromagnetically induced transparency (EIT) of {sup 87}Rb vapor at the temperature of 325 K in a magnetic field. Two linearly polarized orthogonal laser fields act on two dipole-allowed transitions of the D1 line of {sup 87}Rb in the {lambda} configuration, respectively. In the absence of magnetic fields, we observe a wide EIT window with the contrast of about 66% while when the magnetic field is applied, the wide EIT window is split into three or four narrower subwindows with contrasts of 32% or 16% due to the lifting of magnetic sublevels' degeneracy. The number ofmore » EIT subwindows depends on the magnetic field orientation. Our theoretical simulations and analysis are in good agreement with the experimental results.« less