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Inhibition of two-photon absorption in a four-level atomic system with closed-loop configuration
  • 期刊名称：Commun. Theor. Phys.
  • 时间：0
  • 页码：916-920
  • 语言：英文
  • 分类：O437[机械工程—光学工程;理学—光学;理学—物理]
  • 作者机构：[1]Department of Physics and National Key Laboratory for Laser Technique, Huazhong University of Science and Technology, Wuhan 430074, China
  • 相关基金：The project supported in part by National Natural Science Foundation of China unde.r Grant Nos. 10634060, 10575040, and 90503010 Acknowledgments The authors would like to thank professor Ying WU for helpful discussion and his encouragement.
  • 相关项目：冷原子光学Feshbach共振实验及若干理论问题的研究
作者： LI Jia-Hua|JIN Li-Xia|QI Chun-Chao|
关键词： 四能级原子系统, 闭合回路构形, 双光子吸收, 抑制作用, two-photon absorption, quantum interference, closed-loop configuration
中文摘要：

我们理论上与靠近环的配置在 acoherently 驾驶的四水平的原子系统调查二光子的吸收的特征。它被发现 thattwo 光子吸收能就被适当地调整四个协调低紧张的开车领域的相对阶段完全压制，原子系统成为透明 againsttwo 光子吸收。从一个物理观点，我们 exphcitly 以由二条不同二光子的刺激隧道导致的量干扰解释这些结果。

英文摘要：

We theoretically investigate the features of two-photon absorption in a coherently driven four-level atomic system with closed-loop configuration. It is found that two-photon absorption can be completely suppressed just by properly adjusting the relative phase of four coherent low-intensity driving fields and the atomic system becomes trans- parent against two-photon absorption. From a physical point of view, we explicitly explain these results in terms of quantum interference induced by two different two-photon excitation channels.

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超慢光孤子及其相关现象的研究
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