期刊
JOURNAL OF CHEMICAL PHYSICS
卷 154, 期 21, 页码 -出版社
AIP Publishing
DOI: 10.1063/5.0052982
关键词
-
资金
- National Science Foundation [PHY-1707364]
Optical two-dimensional coherent spectroscopy is a powerful tool for studying many-body interactions and correlations in atomic ensembles, providing sensitive and background-free detection of weak dipole-dipole interactions and multi-atom states. This technique has the potential to measure many-body effects in cold atoms and other atomic/molecular systems.
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.
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