Fundamental Distinction of Electromagnetically Induced Transparency and Autler–Townes Splitting in Breaking the Time-Reversal Symmetry,Laser & Photonics Reviews

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Fundamental Distinction of Electromagnetically Induced Transparency and Autler–Townes Splitting in Breaking the Time-Reversal Symmetry
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2022-07-03 , DOI: 10.1002/lpor.202100708
Haodong Wu ₁ , Yaping Ruan ₁ , Zhixiang Li ₁ , Ming‐Xin Dong ₂ , Miao Cai ₁ , Jiangshan Tang ₃ , Lei Tang ₁ , Han Zhang ₃ , Min Xiao ₄ , Keyu Xia _{1,

5}

Affiliation

Despite the essential difference in underlying physics, electromagnetically induced transparency (EIT) and Autler–Townes splitting (ATS) are difficult to be discriminated because they cause resemble absorption and dispersion to a probe electromagnetic field. They are mainly discerned in the sense of absorption profile fitting. Here, the breakdown of the time-reversal symmetry (TRS), namely optical nonreciprocity in the EIT and ATS configurations are experimentally observed by using warm rubidium atoms. The microscopic Doppler effect due to atomic thermal motion causes strong optical nonreciprocity to the probe field in the EIT configuration. In stark contrast, the propagation of the probe field is primarily reciprocal in the ATS configuration. The experimental observations in this study objectively distinguish the EIT and ATS effects in the fundamental physics of breaking the TRS. This experiment proves a concept of using the TRS as a testbed for discerning fundamental physical effects.

中文翻译：

电磁感应透明度和 Autler-Townes 分裂在打破时间反转对称性方面的基本区别

尽管在基础物理方面存在本质差异，但电磁感应透明 (EIT) 和奥特勒-汤斯分裂 (ATS) 难以区分，因为它们对探测电磁场造成类似的吸收和色散。它们主要在吸收剖面拟合的意义上被识别。在这里，时间反转对称性 (TRS) 的破坏，即 EIT 和 ATS 配置中的光学非互易性是通过使用温暖的铷原子实验观察到的。由原子热运动引起的微观多普勒效应对 EIT 配置中的探测场造成强烈的光学非互易性。与之形成鲜明对比的是，探测场的传播在 ATS 配置中主要是相互的。本研究中的实验观察客观地区分了 EIT 和 ATS 效应在打破 TRS 的基础物理中。该实验证明了将 TRS 用作辨别基本物理效应的试验台的概念。

更新日期：2022-07-03

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