18 November 2014 Electromagnetically induced transparency in the four-level system driven by bichromatic microwave field
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Abstract
We present a theoretical study on the nonlinear behaviors of the electromagnetically induced transparency resonance subject to two microwave driving fields in a four-level atom system. The probe absorption spectrum is obtained by solving numerically the relevant equations of density matrix. It is shown that there are two pairs of the EIT windows in the probe absorption spectrum. The two pairs of EIT windows have symmetry with respect to the resonance frequency of the probe field, and the separation is equal to the Rabi frequency of the resonant microwave driving field. But in each pair, the splitting of two EIT windows is dominated to the strength of detuning microwave driving field.
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Lijun Yang, Ke-jia Sun, Su-heng Zhang, Xiao-min Feng, "Electromagnetically induced transparency in the four-level system driven by bichromatic microwave field", Proc. SPIE 9269, Quantum and Nonlinear Optics III, 926914 (18 November 2014); doi: 10.1117/12.2071212; https://doi.org/10.1117/12.2071212
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