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Proceedings Paper

Phase control of electromagnetically induced transparency in a four-level system
Author(s): Lijun Yang; Min Zhao; Dongqi Lv
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Paper 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.

Paper Details

Date Published: 4 November 2010
PDF: 6 pages
Proc. SPIE 7846, Quantum and Nonlinear Optics, 78460Z (4 November 2010); doi: 10.1117/12.869823
Show Author Affiliations
Lijun Yang, Hebei Univ. (China)
Min Zhao, Hebei Univ. (China)
Dongqi Lv, Hebei Univ. (China)

Published in SPIE Proceedings Vol. 7846:
Quantum and Nonlinear Optics
Qihuang Gong; Guang-Can Guo; Yuen-Ron Shen, Editor(s)

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