Entanglement Dynamics of Three-Level Atoms with Light Fields

doi:10.13438/j.cnki.jdzk.2023.06.008

Abstract

Abstract: The system of three-level atom interacting with light field is studied by using the method of full quantum theory.Based on wave function,the dynamic evolution characteristics of different quantum states with the same coupling intensity are studied.In addition,the influence of different coupling intensity of the same quantum state on the dynamic evolution characteristics of the system is discussed.The results show that under the same coupling intensity,the population values of atoms in |b₁> states first decrease and then increase with time,the population values of atoms in |b₂> states and |b₃> states first increase and then decrease with time,and the corresponding population values of |b₂> states produce three peaks in the same period.The population values corresponding to the |b₃> states produce two peaks in the same period,and there is also a trough after the first peak,and the population values of different quantum states show periodic oscillations with time.In the same quantum state,with the increase of the coupling coefficient,the dynamic evolution oscillation characteristics of the quantum state between the light field and atoms are enhanced,and the system dynamic evolution pattern always maintains periodic changes with the increase of time.

Key words: three-level atom system, quantum state, dynamics properties

QING Jiayang, WU Yunwen. Entanglement Dynamics of Three-Level Atoms with Light Fields[J]. Journal of Jishou University(Natural Sciences Edition), 2023, 44(6): 44-49.

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