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

Abstract

We demonstrate---experimentally and theoretically---that resonances obtained in electromagnetically induced transparency (EIT) can be both bright and dark. The experiments are done using magnetic sublevels of a hyperfine transition in the D${}_1$ line of ${}^{87}$Rb. The degeneracy of the sublevels is removed by having a magnetic field of value 27 G. The atoms are contained in a room-temperature vapor cell with anti-relaxation coating on the walls. Theoretical analysis based on a two-region model reproduces the experimental spectrum quite well. This ability to have both bright and dark resonances promises applications in sub- and super-luminal propagation of light, and sensitive magnetometry.

arXiv comment16 pages, 9 figures

References in corpus (7)

• Resonant nonlinear magneto-optical effects in atoms
• Sub- and super-luminal light propagation using a Rydberg state
• High contrast D${}_1$ line electromagnetically induced transparency in nanometric-thin rubidium vapor cell
• Tuning of the Hanle effect from EIT to EIA using spatially separated probe and control beams
• Polarization dependent tuning of the Hanle effect in the ground state of Cs
• Electromagnetically induced transparency resonances inverted in magnetic field
• Permanent EDM measurement in Cs using nonlinear magneto-optic rotation

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