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中国物理B：英文版

Sum and two-atom dipole squeezing in a system of a two-mode vacuum field interacting with two coupled atoms

侯邦品, Liu Jie, 胡萍

Published Jun 12, 2005• 0 citations
Publisher

Abstract

We discuss the effects of the initial atomic coherent factors (including the phase and the distribution parameter) and the dipole-dipole interaction on the sum and two-atom dipole squeezing in the system.The results show that the maximum squeezing in both cases is determined by the phase and the distribution parameter,and the duration of squeezing becomes longer by strengthening the dipole-dipole interaction.In addition,the comparison of the two types of squeezing shows that one type of squeezing is obtained at the expense of increased fluctuations in the other squeezing function.

DOI
10.1088/1009-1963/11/1/007

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We discuss the effects of the initial atomic coherent factors (including the phase and the distribution parameter) and the dipole-dipole interaction on the sum and two-atom dipole squeezing in the system.The results show that the maximum squeezing in both cases is determined by the phase and the distribution parameter,and the duration of squeezing becomes longer by strengthening the dipole-dipole interaction.In addition,the comparison of the two types of squeezing shows that one type of squeezing is obtained at the expense of increased fluctuations in the other squeezing function.
We discuss the effects of the initial atomic coherent factors (including the phase and the distribution parameter) and the dipole-dipole interaction on the sum and two-atom dipole squeezing in the system. The results show that the maximum squeezing in both cases is determined by the phase and the distribution parameter and the duration of squeezing becomes longer by strengthening the dipole-dipole interaction. In addition, the comparison of the two types of squeezing shows that one type of squeezing is obtained at the expense of increased fluctuations in the other squeezing function.
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The time evolution of atomic dipole squeezing in the intensity-dependent coupling interaction between squeezing vacuum state and V-type three-level atom is studied using the quantum theory.The effects of the squeezing degree r of initial field and the coupling constant g are discussed by the method of the numerical calculations.The result shows that when r increases,the times of atomic dipole squeezing decrease gradually and vanish with the time evolution,but the maximum of degree has no evident change;the times of atomic dipole squeezing increase,while the duration is shortened with the increase of g.
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In this paper,the atomic dipole squeezing in the non-resonance system of single-model squeezed vacuum field interacting with two coupling atoms via intensity-dependent coupling in Kerr medium are investigated.By using the numerical method,the relations between the atomic dipole squeezing and the coupling parameter of the system are discussed.The results show that the atomic dipole squeezing depend on the Kerr effect,the detuning,the dipole-dipole interaction between atoms,the initial squeezed parameter of the light and the atomic initial state.