研究了2对非相互作用、空间分离的原子在双模腔场作用下的三体和两体纠缠动力学行为。 对非简并双光子Tavis-Cummings模型进行了研究,通过数值计算分析了纠缠初始状态、原子与腔场以及 光纤模与腔场的耦合强度对纠缠的影响。结果表明:纠缠初始状态对原子间的纠缠有显著影响;较大的场 和光纤模的耦合强度可以实现原子与原子间最大纠缠的转移；较大的原子与腔场耦合强度有助于两原子与腔场构成三体纠缠。

In this letter, we analyze the effects of light intensity on reflective ghost imaging with thermal source. We find that the brightness of reflective ghost image can be changed by modulating the light intensity of the source and the splitting ratio of the beam splitter. The signal-to-noise ratio will be improved by increasing the light intensity of the source. More important, we can obtain the reflective ghost image with high image quality by adopting a low light intensity signal beam and a high light intensity reference beam, which is better than the classical optical imaging, because it can reduce the effects of light on the object.