Properties of Entropy and Entanglement of Two—Mode Nonlinear Coherent States |
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引用本文: | MahmoudAbdel-Aty TarekM.El-Shahat 等.Properties of Entropy and Entanglement of Two—Mode Nonlinear Coherent States[J].理论物理通讯,2002,38(6):715-728. |
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作者姓名: | MahmoudAbdel-Aty TarekM.El-Shahat |
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作者单位: | [1]MathematicsDepartment,FacultyofScience,SouthValleyUniversity,Sohag,Egypt;InstitutfurMathematikundihreDidaktik,UniversitatFlensburg,MuewikerStr.77,D-29943,Flensburg,Germany [2]MathematicsDep,FacultyofScience,SouthValleyUniversity,Sohag,Egypt;InstitutfurMathematikundihreDidaktik,UniversitatFlensburg,MuewikerStr.77,D-29943,Flensburg,Germany |
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摘 要: | In this communication ,two-mode nonlinear coherent states are reviewed and special cases are given,Starting from a three-level atom coupled to two modes of radiation with any form of nonlinearties of the two-mode fields.we derive a Raman-coupled effective Hamiltonian by a unitary transformation,evaluated perturbatively in coupling constants.We use the quantum entropy to measure the degree of entanglement in the time development of an effective two-level atom interacting with two-mode nonlinear-coherent states.The results show that the nolinearity effect yields the superstructure of atomic Radi oscillations and the effect of the Stark shift changes the quasiperiod of the field entropy evolution and entanglement between the particle and the field.A possible experimental test of a new effect is proposed.
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关 键 词: | 量子信息处理 双模非线性相子态 熵特性 |
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