Phase control of electromagnetically induced transparency in a four-level system

Lijun Yang; Min Zhao; Dongqi Lv

doi:10.1117/12.869823

4 November 2010 Phase control of electromagnetically induced transparency in a four-level system

Lijun Yang, Min Zhao, Dongqi Lv

Proceedings Volume 7846, Quantum and Nonlinear Optics; 78460Z (2010) https://doi.org/10.1117/12.869823
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

We present a theoretical study on the frequency position and the linetype of Electromagnetically Induced Transparency (EIT) in a four-level atomic system with a coupling field, two microwave fields and a probe field. The absorption spectrum which is characterized by two EIT windows is obtained by a weak probe field scanning corresponding transition. It can be found that the frequency position and the linetype of EIT change with the relative phase of the two microwave fields. The frequnecy interval reaches the minimum when the relative phase is reverse. If two microwave fields have the same strength and reverse phase, the absorption spectrum will exhibit an EIT. This proposes a way to controlling frequency position of EIT by modulating the relative phase between two fields.

Citation Download Citation

Lijun Yang, Min Zhao, and Dongqi Lv "Phase control of electromagnetically induced transparency in a four-level system", Proc. SPIE 7846, Quantum and Nonlinear Optics, 78460Z (4 November 2010); https://doi.org/10.1117/12.869823

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