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Journal of Atomic and Molecular Physics

Statistic properties of photon in the system of squeezed vacuum field interacting with two coupling atoms via intensity-dependent coupling in Kerr medium

Fanzhi Kong

Published Jan 1, 2007• 0 citations
OpenAlex

Abstract

The statistic properties of photon 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 statistic properties of photon and the coupling parameter of the system are discussed.The results show that the statistic properties of photon 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.

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The statistic properties of photons in the system of two-mode squeezing vacuum field interacting with two coupling atoms in Kerr medium are studied by means of quantum theory.The influences of coupling constant χ, initial squeezed parameter r and the atomic initial state are discussed. The results obtained by means of numerical method show that the photon bunching and anti-bunching appear alternately, and the correlation of the two modes of light is both positive and non-classical. The periodical collapse-revival phenomenon of the time evolution of the second-order coherence degree of the two-mode field appears due to the influence of the Kerr effect. The periods of the collapse-revival become short up to disappearance with increasing Kerr effect.
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In this paper, the photon statistical properties vs. time in the system of Λ-type atom interacting with squeezed coherent light field inside a high Q with a Kerr medium is investigated by means of the interacting picture.Meanwhile, the influence of Kerr medium μ, the squeezed light field factors γ the coherent vibration amplitude |α| 2 and the coupling parameters λ of the field-atom on the photon statistical properties are also discussed. It has been shown that the intensity coefficient μ of Kerr medium, the squeezed light field factor γ,the coherent vibration amplitude |α| 2 of the light field and the coupling parameter λ of the field-atom influence the quantum collapse-revival periodicity of the evolution curves of Mandel factor Q(t).Meanwhile, they all influence the states and properties of the photon statistical distribution of radiation field.