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Chin. Phys. B, 2013, Vol. 22(3): 030309    DOI: 10.1088/1674-1056/22/3/030309
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Electromagnetically induced transparency of single Λ-type three-level atom in high-finesse optical cavity

Sun Yan-Fen (孙燕芬)a, Tan Lei (谭磊)b, Xu Yan (徐岩)c
a Department of Physics, Luliang University, Luliang 033000, China;
b Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000, China;
c College of Science, Shandong University of Science and Technology, Qingdao 266510, China
Abstract  We study the features of the electromagnetically induced transparency (EIT) in a single Λ-type three-level atom placed in a high finesse cavity under the action of a coupling laser and a probe laser. Our calculations show that three transparency windows appear when the pump strength is big enough. It can be explained by the residual pump in the cavity resulting mostly in the energy splitting. Level |3〉is split into four slightly different energy levels. An interference takes place between excitation pathways. Furthermore, it is also shown that the frequencies of the EIT windows can be tuned by changing the coupling field detuning Δ2 and the reflection profile is very sensitive to the cavity field detuning Δc.
Keywords:  Λ-type three-level atom      high finesse optical cavity      electromagnetically induced transparency  
Received:  06 July 2012      Revised:  06 September 2012      Accepted manuscript online: 
PACS:  03.65.Yz (Decoherence; open systems; quantum statistical methods)  
  03.65.Ud (Entanglement and quantum nonlocality)  
  03.67.Pp (Quantum error correction and other methods for protection against decoherence)  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11274148 and 10704031), the Basic Scientific Research Business Expenses of the Central University, China (Grant No. lzujbky-2010-75), and the Open Project of Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, China.
Corresponding Authors:  Tan Lei     E-mail:  tanlei@lzu.edu.cn

Cite this article: 

Sun Yan-Fen (孙燕芬), Tan Lei (谭磊), Xu Yan (徐岩) Electromagnetically induced transparency of single Λ-type three-level atom in high-finesse optical cavity 2013 Chin. Phys. B 22 030309

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