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Journal of Hebei Normal University

Statistic Properties of Photon in the System of the Two-mode Entangled Coherent Field Interacting with Atoms via Multiphoton Process

Duo Zhang

Published Jan 1, 2010• 0 citations
OpenAlex

Abstract

The statistic properties of photon in the system of two-mode entangled coherent field interacting with two two-level atoms via multiphoton process are investigated by means of quantum theory and numerical method.The effect on statistic properties of photon induce by the mean photon number of field,the absorbing or emitting photon number,the degree of the entanglement for the entangled coherent field,and the coupling strength of dipole-dipole interaction between atoms are discussed.

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The statistic properties of photon in the system of a two-mode entangled coherent state interacting with a Ξ-type three-level atom are investigated by solving Schrdinger equation and using numerical calculations. The effects on the statistic properties of photon induced by the degree of entanglement of the two-mode entangled coherent state, the ground state probability amplitude of the atomic initial state, the detuning, the atom-field coupling constant and the mean photon number are analyzed. The results indicate that the influence of the degree of entanglement of the two-mode entangled coherent state on the statistic properties of photon is small. The increasing of the ground state probability amplitude of the atomic initial state causes the center of the time evolution curve to move up distinctly. The increasing of the detuning results in the decrease of the oscillating frequency of the time evolution curve. The influences of the atom-field coupling constant and the mean photon number on the statistic properties of photon are noticeable. The correlation of the two modes of light is non-classical all the time.
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The quantum statistical properties of two field modes are studied for a three-level atom with multiphoton transition interacting with two cavity fields. By numerical calculations it is shown that, in the continual absorbing and emitting photons of the interacting system a "photon submergence," the bunching and antibunching effects of two modes, exists. In addition, the impact of the atom's one transition photon numbers and the initial mean photon number of two modes on these effects are discussed in detail.