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arXiv · 2210.10115

Optical Two-dimensional Coherent Spectroscopy of Cold Atoms

Danfu Liang·Lexter Savio Rodriguez·Haitao Zhou·Yifu Zhu·Hebin Li
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Abstract

We report an experimental demonstration of optical 2DCS in cold atoms. The experiment integrates a collinear 2DCS setup with a magneto-optical trap (MOT), in which cold rubidium (Rb) atoms are prepared at a temperature of about 200 $\mu$K and a number density of $10^{10}$ cm$^{-3}$. With a sequence of femtosecond laser pulses, we first obtained one-dimensional second- and fourth-order nonlinear signals and then acquired both one-quantum and zero-quantum 2D spectra of cold Rb atoms. The capability of performing optical 2DCS in cold atoms is an important step toward optical 2DCS study of many-body physics in cold atoms and ultimately in atom arrays and trapped ions. Optical 2DCS in cold atoms/molecules can also be a new avenue to probe chemical reaction dynamics in cold molecules.

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Danfu Liang, Lexter Savio Rodriguez, Haitao Zhou, Yifu Zhu, Hebin Li. 2022-10-18. Optical Two-dimensional Coherent Spectroscopy of Cold Atoms. https://doi.org/10.1364/ol.478793

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