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The three-photon resonant nondegenerate six-wave mixing via quantum interference in the middle level

Sun Jiang Sun Juan Wang Ying Su Hong-Xin Cao Jin-Feng

The three-photon resonant nondegenerate six-wave mixing via quantum interference in the middle level

Sun Jiang, Sun Juan, Wang Ying, Su Hong-Xin, Cao Jin-Feng
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Publishing process
  • Received Date:  21 November 2011
  • Accepted Date:  05 June 2012
  • Published Online:  05 June 2012

The three-photon resonant nondegenerate six-wave mixing via quantum interference in the middle level

  • 1. College of Physical Science and Technology, Hebei University, Baoding 071002, China;
  • 2. College of Mathematics and Computer Science, Hebei University, Baoding, 071002, China
Fund Project:  Project support by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 10804025) and the Natural Science Foundation of Hebei Province, China (Grant Nos. A2009000147, 08B006, 08B008).

Abstract: We study the quantum interference in three-photon resonant nondegenerate six-wave mixing (NSWM) of a five-level system in which the middle level of six-wave mixing and other levels are coupled by a strong laser field. The coupling field-dependence of the NSWM signal intensity, and the spectrum of the NSWM with a coupling field, are discussed. We find that in the presence of a strong coupling field, the three-photon resonant NSWM spectrum exhibits Autler-Townes splitting, which reflects the levels of the dressed states. It also leads to either suppression or enhancement of the NSWM signal. Due to the enhancement of NSWM signal caused by quantum interference, the dressed state created by a coupling field can replace the atom intrinsic level and serve as the middle level of three-photon resonance. Thus the middle level of three-photon resonance can be controlled by a coupling field.

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