Subluminal to superluminal light propagation in a V-type three-level atomic system interacting with squeezed vacuum  

作　　者：Zhang Qin Qu Guang-Hui Tang Yuan-He Jin Kang Ji Wei-Li 张琴;屈光辉;唐远河;金康;红卫莉(Department of Physics,Xi'an University of Technology,Xi'an 710054,China;Department of Physics,Northwest University,Xi'an 710069,China)

机构地区：[1]Department of Physics,Xi'an University of Technology,Xi'an 710054,China [2]Department of Physics,Northwest University,Xi'an 710069,China

出　　处：《Chinese Physics B》2012年第2期243-249,共7页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No.10874138)

摘　　要：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.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.

关 键 词：squeezed vacuum group velocity superluminal propagation subluminal propagation 

分 类 号：O431.2[机械工程—光学工程] TN015[理学—光学]