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首页> 外文期刊>The Journal of Chemical Physics >Optical two-dimensional coherent spectroscopy of many-body dipole-dipole interactions and correlations in atomic vapors
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Optical two-dimensional coherent spectroscopy of many-body dipole-dipole interactions and correlations in atomic vapors

机译：多体偶极 - 偶极相互作用的光学二维相干光谱和原子蒸汽中的相关性

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摘要

Many-body interactions and correlations in atomic ensembles are fundamental in understanding many-body effects such as collective and emergent phenomena and also play an important role in various atom-based applications. Optical two-dimensional coherent spectroscopy (2DCS) provides a powerful tool to measure many-body interactions and correlations. Here, we present the study of many-body dipole-dipole interactions and correlations in potassium and rubidium atomic vapors by using double-quantum and multi-quantum 2DCS. The results show that double-quantum 2DCS provides sensitive and background-free detection of weak dipole-dipole interaction between atoms with a mean separation up to about 16 mu m, and multi-quantum 2DCS can excite and detect multi-atom states (Dicke states) with up to eight correlated atoms. The technique of optical 2DCS can provide a new approach to study many-body physics in atomic ensembles and can be potentially implemented to measure many-body effects in cold atoms and other atomic/molecular systems.
机译：原子系综中的多体相互作用和关联是理解多体效应（如集体和涌现现象）的基础，在各种基于原子的应用中也发挥着重要作用。光学二维相干光谱（2DCS）为测量多体相互作用和关联提供了强有力的工具。在这里，我们用双量子和多量子2D CS研究了钾和铷原子蒸气中的多体偶极-偶极相互作用和关联。结果表明，双量子2DCS能够灵敏、无背景地探测原子间的弱偶极-偶极相互作用，平均间距高达16μm左右，多量子2DCS能够激发和探测多达8个相关原子的多原子态（Dicke态）。光学2DCS技术为研究原子系综中的多体物理提供了一种新的方法，并有望用于测量冷原子和其他原子/分子系统中的多体效应。

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