Evolution of atom entropy in a moving cascade three-level atom in a two-photon process | Zendy

Zhang Jin-Fang | Zendy; Lei Tan | Zendy; Liwei Liu | Zendy; Cai-Ying Ding | Zendy

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Evolution of atom entropy in a moving cascade three-level atom in a two-photon process

Author(s) -

Zhang Jin-Fang,

Lei Tan,

Liwei Liu,

Cai-Ying Ding

Publication year - 2008

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.57.2205

Subject(s) - cascade , physics , time evolution , atom (system on chip) , entropy (arrow of time) , photon , atomic physics , joint quantum entropy , quantum mechanics , quantum , chemistry , chromatography , computer science , embedded system

The entropy evolution properties of field (atom) in a moving cascade three-level atom interacting with a single-mode field are studied through two photon transitions. When the atom is initially in coherent state, the influences of the atomic motion, the field-mode structure parameter and the initial average photon number on the evolution of the entropy are discussed. The results show that the entropy evolution period of the field is dependent of the atomic motion and the field-mode structure parameter. However, the parameter of the initial average photon number will neither lengthen nor shorten the entropy evolution period of the field, but the numerical values of maximum and sub-minimum of entropy will be affected by it.

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