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Detuned Electromagnetically Induced Transparency in an $N$-type Atom

Bin Luo·Xiao Li·Hong Guo
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Abstract

The electromagnetically induced transparency (EIT) in an $N$ configuration is studied under both resonant and off-resonant conditions. In a certain off-resonant condition the dark state of the four level system, which is almost the same as the resonant dark state in $Λ$ configuration, is rebuilt. The actual system with damping is examined using optical Bloch equation, both numerically and analytically. Based on this detuned dark state, some new applications with frequency shifts can be realized.

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Bin Luo, Xiao Li, Hong Guo. 2007-11-06. Detuned Electromagnetically Induced Transparency in an $N$-type Atom. https://arxiv.org/abs/quant-ph/0601153

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