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中文摘要：
我们对两个全同二能级原子通过双光子跃迁与单模辐射场发生相互作用的Tavis-Cummings（T-C）模型中的量子纠缠特性进行了研究．通过数值计算与分析，结果表明：双光子T-C模型的量子纠缠比单光子T-C模型的量子纠缠要保持得好一些；另外分析了双光子T-C模型中原子间偶极-偶极相互作用强度系数、原子与场的耦合系数、光子数对两原子间纠缠特性与场熵的影响．
英文摘要：
We studied the quantum entanglement property of the Tavis-Cummings model for two identical two-level atoms interacting with a Single-mode field by means of two-photons transition. It is show by numerical calculation and analysis that The two-photons T-C model has much superiority compared with the one-photon T-C model. Besides, the change entanglement measure between two atoms and the filed entroy is associated with initial state, coupling coefficients and photon number.
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