Electromagnetically induced transparency in a Zeeman-sublevels <italic>Λ</italic>-system of cold <sup>87</sup>Rb atoms in free space

Electromagnetically induced transparency in a Zeeman-sublevels Λ-system of cold ⁸⁷Rb atoms in free space

Jiang Xiaojun^{1, 2}, Zhang Haichao¹, Wang Yuzhu^{1, †,}

The Zeeman states EIT scheme. (a) Relevant energy levels of the D₂ line of ⁸⁷Rb. Both the coupling and probe lights drive the |F = 2〉 → |F′ = 2〉 transition. The repumping light drives the |F = 1〉 → |F′ = 1〉 transition to minimize the perturbation to the EIT system. (b) When the coupling and probe lights are σ⁺ and σ⁻ lights, respectively, the multilevel system is reduced to an ideal closed three-level Λ-type system.