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Subluminal to superluminal light propagation in a V-type three-level atomic system interacting with squeezed vacuum |
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| Authors: | Zhang Qin Qu Guang-Hui Tang Yuan-He Jin Kang and Ji Wei-Li |
| Institution: | Department of Physics, Xián University of Technology, Xián 710054, China;Department of Physics, Xián University of Technology, Xián 710054, China;Department of Physics, Xián University of Technology, Xián 710054, China;Department of Physics, Northwest University, Xián 710069, China;Department of Physics, Xián University of Technology, Xián 710054, China |
| Abstract: | We study the light propagation properties in a V-type three-level atomic system interacting with two independent broadband squeezed baths. Using the graphic method, the dependences of the absorption and the dispersion of the system on the coupling field strength, the incoherent pumping field strength and the intensity of the squeezed vacuum are analysed. The result shows that the probe pulse propagation can be changed from subluminal to superluminal speed. |
| Keywords: | squeezed vacuum group velocity superluminal propagation subluminal propagation |
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