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A Study on the Dynamical Process for Atom Interacting with the Kerr Medium

Author: WangZhiHai
Tutor: ZhuHongBo
School: Northeast Normal University
Course: Theoretical Physics
Keywords: Kerr medium Fr (o ¨) hlich transform Concurrence of entanglement degree Spontaneous symmetry breaking
CLC: O431.2
Type: Master's thesis
Year: 2010
Downloads: 27
Quote: 0
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Abstract


In the study of quantum optics , Kerr medium - material interaction is a very commonly used theoretical and experimental system , the dynamics of the interaction system led to a very typical effect . Kerr medium in recent years has also been a large number of data lines ( Data Bus) as quantum information research . When Kerr medium multi- atom interaction , in the case of certain conditions are met , the degree of freedom of the light field can be eliminated, resulting in the effective interaction of atoms . In such a process , Fr ( o | ¨ ) hlich transform is a very commonly used method , it is identical to the results of the perturbation theory , has both the expression clear advantages . Promotion , a force optical system can be equivalent into the form of a nonlinear Kerr medium atomic role . This paper studies the dynamic process of interaction between atom nonlinear Kerr medium . Fr (o | ¨) hlich transform applied to quantum optics system , by eliminating the degrees of freedom of the light field , the effective evolution of atoms . Singlemode detuned light field , it is clear that the dynamics with spontaneous symmetry breaking occurs . The article also focuses on the interaction of diatomic Kerr medium , calculated atom entanglement properties . Analysis on the basis of the theory of second - order phase transition , the the homeostasis mobile media , discussed in detail the impact of the emergence of non-zero steady-state media entanglement .

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CLC: > Mathematical sciences and chemical > Physics > Optics > The light nature of the theory > Quantum optics
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