INTERACTION OF A TWO-LEVEL ATOM WITH FINE STRUCTURE MOVING IN AN ELECTROMAGNETIC FIELD |
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Authors: | Zhang Jing-tao Chen Zhao-yang and Xu Zhi-zhan |
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Institution: | Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China |
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Abstract: | Dynamics of a moving two-level atom with fine structure interacting with an electromagnetic field is studied. The fine structure increases the damping rate induced by the atomic momentum distribution. When the field is in a Fock state, the Rabi oscillation becomes very complicated; when the field is in a superposition state, the collapse-revival phenomenon disappears for the wider atomic wavepackets. In the presence of the fine structure, each atomic level splits into three sublevels when the field is in a Fock state and the atom has a definite momentum. |
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