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Acta Physica Sinica

Dynamics of Two-Mode SU(2) Coherent States Interacting With Two C onpled Atoms

Tian Yong-hong, PENG JIN-SHENG, (1)华中师范大学物理系,武汉 430070; (2)华中师范大学物理系,武汉 430070;荆州师范学院物理系,荆州 434100

Published Jan 1, 2000• 1 citation
Publisher

Abstract

The dynamic behavior of atoms and nonclassical properties of the two-mode field in the system of nondegenerate two-photon interacting of SU(2) coherents tates with two atoms are studied. Influences of the total photon number the par tition parameter and the dipole-dipole interaction on the atomic dynamic behav ior and the quantum statistics properties of the two-mode field are discussed.

DOI
10.7498/aps.49.67

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We study the dynamical poperties of atoms and field under the interaction of pair coherent state with two two-level atoms, and discuss how they are modified by dipole-dipole interaction. The numerical results show that the degrees and the revivals of the squeezing as well as the sum-squeezing of the field decrease with increasing dipole-dipole interaction. When the difference in the number of photons q increases, the degrees and the revivals of the squeezing as well as the sum-squeezing of the field decrease, the nonclassical correlation between two modes get weaker, the sub-Poissonian distribution for mode 1 get wider, and that for mode 2 becomes narrower in the collapse region. The increase in q results in speeding up of the energy exchange between atoms and the two-mode light field.