Cavity Field Spectra of a Cascade Three-Level Atom Interacting with a Single-Mode Field with Kerr-Like Medium  

Cavity Field Spectra of a Cascade Three-Level Atom Interacting with a Single-Mode Field with Kerr-Like Medium

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作  者:GAO Yun-Feng FENG Jian ZHANG Gui-Ming 

机构地区:[1]College of Educational Technology and Massmedium, Liaocheng University, Liaocheng 252059, China [2]Institute of Optical Communication, Liaocheng University, Liaocheng 252059, China

出  处:《Communications in Theoretical Physics》2007年第1期131-134,共4页理论物理通讯(英文版)

基  金:The project supported by the Natural Science Foundation of Shandong Province under Grant No. Y2004A09

摘  要:The cavity field spectrum of a cascade three-level atom interacting with single-mode field with Kerr-like medium in the cavity is investigated. The numerical results for the initial field in pure number state, coherent state and squeezed vacuum state are calculated, respectively. It is found that the Kerr-like medium affects the spectral structure even though the initial field is in vacuum when the atom is in upper level. In the case of strong input field, the number state spectrum shows two peaks with different heights; and the superposition state spectrum shows a multipeak structure with an equal distance of two neighboring peaks. The spectral "central frequency" shifts away from the resonant frequency with the increasing of average photon number.

关 键 词:cavity field spectrum Kerr-like medium cascade three-level atom 

分 类 号:O562[理学—原子与分子物理]

 

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