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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Dressed state analysis of electromagnetically induced transparency in a five-level X-type atomic system with wavelength mismatching effects
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Dressed state analysis of electromagnetically induced transparency in a five-level X-type atomic system with wavelength mismatching effects

机译：具有波长错配效应的五级X型原子系统中电磁诱导透明度的衣服状态分析

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摘要

We present the theoretical study of the wavelength dependence of electromagnetically induced transparency (EIT) in a five-level X-type atomic system using dressed state approach. Our numerical calculations reveal that the EIT response of the composite X-type system is more intricate than its constituent Lambda and two Xi subsystems. We derive an analytical solution for probe coherence using the perturbation technique. In the case of stationary atoms, EIT control is possible by varying the strengths and/or the detunings of strong electromagnetic fields. The dressed state picture is employed to describe the position and strength of each peak in probe absorption profile. We also explore in- depth the effect of Doppler broadening on EIT for perfect (lambda(p) = lambda(c1) lambda(c2) = lambda(c3)) and various partial wavelength mismatching schemes (lambda(p) = lambda(c1) lambda(c2) lambda(c3) and lambda(p) = lambda(c1) lambda(c2), lambda(c3)). Our results manifest that when lambda(p) = lambda(c1) lambda(c2), lambda(c3), mixing of one Doppler free Lambda and two Doppler broadened Xi subsystems results in splitting of absorption and dispersion profiles. Further we substantiate that transparency in a Doppler-broadened medium depends not only on the two-photon EIT positions, but also on the positions of the Autler-Townes components across the various velocity groups. The group index and group delay time profiles become broad on increasing the wavelength mismatching factors.
机译：我们在使用衣服状态方法介绍了电磁诱导透明度（EIT）在五级X型原子系统中的波长依赖性的理论研究。我们的数值计算表明，复合X型系统的EIT响应比其成分Lambda和两个Xi子系​​统更复杂。我们使用扰动技术推导出探测连贯性的分析解决方案。在静止原子的情况下，通过改变强电磁场的强度和/或静电来实现EIT控制。穿着的状态图片用于描述探针吸收曲线中每个峰的位置和强度。我们还探讨了多普勒扩展对完美EIT的效果（Lambda（P）=λ（C1）＆λ（C2）=λ（C3））和各种部分波长错配方案（Lambda（P）= lambda （C1）＆ Lambda（C2）＆λ（C3）和λ（p）=λ（C1）＆λ（c2），λ（c3））。我们的结果表明，当Lambda（p）= lambda（c1）＆ Lambda（C2），λ（C3），一个多普勒免费λ和两个多普勒扩大XI子系统的混合导致吸收和分散型材的分裂。此外，我们证实了多普勒 - 扩展介质中的透明度不仅取决于双光子EIT位置，而且还取决于跨越各种速度组的自动排放部件的位置。组索引和组延迟时间概况越来越广泛地增加了波长不匹配因子。

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