The Squeezing Effect In A System Of Moving Atom Interacting With Field

The squeezing effect in a system of moving atom interacting with fieldIn the quantum optics field, the study of the quantum properties of the system of the field interacting with the atom has been always devoted to considerable attention. It is one of the most important contents for the quantum optics to study on the dynamics and non-classical properties of the interaction between the field and the moving atom in the Jaynes-Cummings model with atomic moving. In this paper, the squeezing effect in a system of moving atom interacting with field, of the traditional squeezing of the moving atom,of the atomic quantum information entropy squeezing, of the traditional squeezing of the field , of the field entropy squeezing are studied, and a series of significant results are obtained.In chapter 1, a simple history overview is presented about the the Jaynes-Cummings model with atomic moving. With the Hamiltonian of the interaction between the field and the moving atom , the evolution operator and the reduced density operators of the field and the atom are derived, then the basic work model with atomic motion is established. In addition,the theories of the quantum information entropy squeezing and the traditional squeezing of atom and field are absorbed in the last of this chapter, which form the theoretical basic of the work in the following chapters.In chapter 2, the squeezing effect of a moving atom interacting with a squeezed vacuum state field is investigated using the traditional squeezing theory of the atom .The influence of the field-mode structure parameter and the squeezing parameter on the squeezing effect of a moving atom is investigated in detail.It is shown that the squeezing effect of a moving atom depends on the initial state of the atom , the field-mode structure parameter and the squeezing parameter, with increase in the squeezing parameter, the squeezing time and the squeezing effect decrease ,with increase in the field-mode structure parameter, the period of evolution shortens and the squeezing timeprolongs, the moving atom may exhibit long time squeezing effect for some choiced system parameters.In chapter 3,the squeezing effect of the field interacting with an moving atom is investigated by means of the traditional squeezing theory of the field. The influence of the initial average photon number and field model structure parameter on the squeezing property of the field is studied in detail. It is shown that the squeezing effect of the field depends on the initial mean photon number and the field-mode structure parameter, the field may exhibit long time squeezing effect for some choiced system parameters.In chapter 4, the influence of the motion of the atom, the field mode structure and the initial mean photon number on the field entropy squeezing is investigated by means of the theory of quantum information entropy. It is shown that the atomic motion leads to the periodic evolution of the field entropy squeezing, this period depends on the field mode structure parameter and the field may exhibit long time entropy squeezing effect for some choiced system parameters.In chapter 5, the dynamics behaviors of quantum information entropy squeezing of the moving atom dipoles are investigated. The influences of the atomic coherence ,the atomic motion and the field-mode structure on the quantum information entropy squeezing of the atomic dipoles are investigated in detail. The comparing of the numerical results obtained from the uncertainty relation of Heisenberg (HUR) to those from the uncertainty relation of the quantum information entropy (EUR) proves the triviality of HUR with exact examples. The results show that the atomic motion leads to the periodic evolution of the entropy squeezing, an increase in field-mode structure parameter results in not only the shortening of the evolution period of the entropy squeezing but also prolonging of the squeezing time, the moving atom may exhibit long time entropy squeezing effect for some choiced system parameters, the information entropy is more precise...