In this manuscript, we observed narrowing of electromagnetically induced transparency (EIT) spectral width by using superimposed Laguerre–Gaussian (LG) beams for coupling light. EIT with narrow transparency width has a potential application towards slow light for quantum memory devices. LG beams of σ + and σ − polarization are superimposed and used as coupling light for an EIT experiment. A theoretical model is discussed using a semi-classical treatment and the experimental part confirms the narrowing of EIT width for higher values of ‘ l ’.

中文翻译：

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通过在85 Rb原子蒸气介质中使用结构化耦合光来缩小电磁感应的透明度

在此手稿中，我们观察到通过使用叠加的Laguerre-Gaussian（LG）光束耦合光，电磁感应透明（EIT）光谱宽度变窄。具有窄的透明宽度的EIT对于量子存储器件的慢光具有潜在的应用。叠加了σ+和σ-偏振的LG光束，并将其用作EIT实验的耦合光。使用半经典处理讨论了理论模型，并且实验部分证实了对于较高的“ l”值，EIT宽度变窄。