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Communications in Theoretical Physics 2014年第9期61卷 430-442页

作者： H.R.Baghshahi m.k.tavassoly A.Behjat Atomic and molecular Group Faculty of Physics Yazd University Department of Physics Faculty of Science Vali-e-Asr University of Rafsanjan The Laboratory of Quantum Information Processing Yazd University Photonics Research Group Engineering Research Center Yazd University

The interaction between a◇-type four-level atom and a single-mode field in the presence of kerr medium with intensity-dependent coupling involving multi-photon processes has been studied. Using the generalized(nonlinear)Jaynes–Cummings model, the exact analytical solution of the wave function for the considered system under particular condition, has been obtained when the atom is initially excited to the topmost level and the field is in a coherent state. Some physical properties of the atom-field entangled state such as linear entropy showing the entanglement degree, mandel parameter, mean photon number and normal squeezing of the resultant state have been calculated. The effects of kerr medium, detuning and the intensity-dependent coupling on the temporal behavior of the latter mentioned nonclassical properties have been investigated. It is shown that by appropriately choosing the evolved parameters in the interaction process, each of the above nonclassicality features, which are of special interest in quantum optics as well as quantum information processing, can be revealed.

关键词： Jaynes–Cummings model intensity-dependent coupling kerr medium entanglement mandel parameter squeezing

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Dynamics of Information Entropies of Atom-Field Entangled States Generated via the Jaynes-Cummings model

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Communications in Theoretical Physics 2016年第3期65卷 266-272页

作者： R.Pakniat m.k.tavassoly m.H.Zandi Faculty of Physics Shahid Bahonar University of Kerman Atomic and molecular Group Faculty of PhysicsYazd University Photonic Research Group Engineering Research CenterYazd University The Laboratory of Quantum Information Processing Yazd University

In this paper we have studied the dynamical evolution of Shannon information entropies in position and momentum spaces for two classes of(nonstationary)atom-field entangled states,which are obtained via the JaynesCummings model and its *** have focused on the interaction between two-and(1)-type three-level atoms with the single-mode quantized *** three-dimensional plots of entropy densities in position and momentum spaces are presented versus corresponding coordinates and time,*** is observed that for particular values of the parameters of the systems,the entropy squeezing in position space ***,we have shown that the well-known BBm(Beckner,Bialynicki-Birola and mycielsky)inequality,which is a stronger statement of the Heisenberg uncertainty relation,is properly satisfied.

关键词： Jaynes-Cummings模型 Shannon信息熵原子纠缠态动态生成位置空间动量空间三能级原子动态演化

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Quantum Squeezing of Dark Solitons in Optical Fibers

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Communications in Theoretical Physics 2011年第8期56卷 322-326页

作者： G.R.Honarasa m.Hatami m.k.tavassoly Atomic and molecular Group Faculty of PhysicsYazd University Physics Group Faculty of ScienceShiraz University of Technology

在纤维的黑暗 soliton 繁殖的量子论基于 linearization 近似被学习。当时，在光子数字，阶段，位置(时间) 和使量子化的黑暗 solitons 的动量的无常是计算的。最后，压榨黑暗 soliton 被使用 homodyne 察觉并且与明亮的 soliton 大小... 详细信息

在纤维的黑暗 soliton 繁殖的量子论基于 linearization 近似被学习。当时，在光子数字，阶段，位置(时间) 和使量子化的黑暗 solitons 的动量的无常是计算的。最后，压榨黑暗 soliton 被使用 homodyne 察觉并且与明亮的 soliton 大小写相比调查。

关键词：量子理论暗孤子光纤压缩线性近似孤子传输零差检测光子数

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Solution of the Schrdinger equation for a particular form of morse potential using the Laplace transform

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Chinese Physics C 2013年第4期 42-44页

作者： m.Zarezadeh m.k.tavassoly Atomic and molecular Group Faculty of PhysicsYazd University Photonics Research Group Engineering Research CenterYazd University

In this paper, we have solved the Schrdinger equation for a particular kind of morse potential and find its normalized eigenfunctions and eigenvalues, exactly. Our work is based on the Laplace transform technique wh... 详细信息

关键词： Schrdinger equation Laplace transform morse potential bound state