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Chinese Physics B 2014年第7期23卷 417-428页

作者： H R Baghshahi M K Tavassoly A Behjat atomic and Molecular Group Faculty of PhysicsYazd University The Laboratory of Quantum Information Processing Yazd University Department of Physics Faculty of ScienceVali-e-Asr University of Rafsanjan Photonics Research Group Engineering Research CenterYazd University

The interaction between a two-level atom and a single-mode field in the k-photon Jaynes-Cummings model （JCM） in the presence of the Stark shift and a Kerr medium is studied. All terms in the Hamiltonian, such as the single-mode field, its interaction with the atom, the contribution of the Stark shift and the Kerr medium effects are considered to be f-deformed. In particular, the effect of the initial state of the radiation field on the dynamical evolution of some physical properties such as atomic inversion and entropy squeezing are investigated by considering different initial field states （coherent, squeezed and thermal states）.

关键词： Jaynes-Cummings model entropy squeezing atomic inversion intensity-dependent coupling

inversion of an atomic Wave Packet in a Circularly Polarized Electromagnetic Wave

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Communications in Theoretical Physics 2001年第1期35卷 83-86页

作者： ZENGGao－Jian CCAST（WorldLaboratory） P.O.Box8730Beijing100080China

We study behavior of an atomic wave packet in a circularly polarized electromagnetic wave, and particularly calculate the atomic inversion of the wave packet. A general method of calculation is presented. The results are interesting. For example, if the wave packet is very narrow or/and the interaction is very strong, no matter the atom is initially in its ground state or excited state, the atomic inversion approaches zero as time approaches infinity. If the atom is initially in its ground state and excited state with the probability 1/2 respectively, and if the momentum density is an even function, then the atomic inversion equals zero at any time.

关键词： atomic inversion atomic wave packet circularly polarized electromagnetic wave

Entropy squeezing of an atom with a k-photon in the Jaynes-Cummings model

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Chinese Physics B 2010年第1期19卷 318-325页

作者：康冬鹏廖庆洪 Ahamd Muhammad Ashfaq 王月媛刘树田 Department of Physics Harbin Institute of Technology COMSATS Institute of Information Technology Department of Physics

The entropy squeezing of an atom with a k-photon in the Jaynes Cummings model is investigated. For comparison, we also study the corresponding variance squeezing and atomic inversion. Analytical results show that entropy squeezing is preferable to variance squeezing for zero atomic inversion. Moreover, for initial conditions of the system the relation between squeezing and photon transition number is also discussed. This provides a theoretical approach to finding out the optimal entropy squeezing.

关键词： Jaynes-Cumming model entropy squeezing variance squeezing atomic inversion

Exact Solution of the Milburn Equation for the Coupled—Channel Cavity QED Model

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Communications in Theoretical Physics 2003年第1期39卷 91-96页

作者： SONGTong_Qiang FANHong－Yi DepartmentofPhysics NingboUniversityNingbo315211China CCAST（WorldLaboratory） P.O.Box8730Beijing100080China DepartmentofMaterialScienceandEngineering UniversityofScienceandTechno

We give the exact solution of Milburn equation for a coupled-channel cavity QED model which includes the Stark term and the frequency detuning, and study the influence of the intrinsic decoherence on the atomic invers... 详细信息

关键词： Milburn equation intrinsic decoherence atomic inversion

Quantum Collapse and Revival of Atom in Mode-Mode Competing System

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Communications in Theoretical Physics 2005年第3期43卷 515-518页

作者： WUQin FANGMao-Fa CollegeofPhysicsandInformationScience HunanNormalUniversityChangsha410081China

The atomic inversion dynamics in the mode-mode competing system is studied bymeans of fully quantum theory. A general solution to the Schroedinger equation of this system isobtained. The influence of the relative competing strength between the atom and the two-mode Geld onthe atomic inversion is disccussed. We show that the presence of the mode-mode competition canresult in periodical collapses-revivals of the atomic inversion.

关键词： two-mode competition model atomic inversion collapse and revival

atomic dynamics in the mode-mode competition system

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Chinese Physics B 2004年第9期13卷 1432-1437页

作者：吴琴方卯发 CollegeofPhysicsandInformationScience HunanNormalUniversityChangsha410081China

The atomic dynamical properties in the system with competing k-photon and l-photon transitions are studied fully by means of quantum theory. We discuss the influences of the mode-mode competition, the relative competing strengths of the atom and the two-mode field, and the initial state of the system on the atomic dynamics. We show that the presence of the mode-mode competition can result in quite a periodical collapses-revivals of the atomic inversion and the increase of the initial photons of the system can lead to the collapse-revival phenomenon and prolong the revival time of the atomic inversion.

关键词： two-mode competition model atomic inversion collapse and revival

The Pancharatnam Phase of a Three-Level Atom Coupled to Two Systems of N-Two Level Atoms

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Journal of Quantum Information Science 2016年第1期6卷 44-55页

作者： D. A. M. Abo-Kahla Department of Mathematics Faculty of Education Ain Shams University Cairo Egypt

In this paper, we present the analytical solution for the model that describes the interaction between a three-level atom and two systems of N-two level atoms. The effects of the quantum numbers and the coupling parameters between spins on the Pancharatnam phase and the atomic inversion, for some special cases of the initial states, are investigated. The comparison between the two effects shows that the analytic results are well consistent.

关键词： Pancharatnam Phase atomic inversion Systems of N-Two Level Atoms