Optical Two-dimensional Coherent Spectroscopy of Cold Atoms

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 seq...

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Veröffentlicht in:arXiv.org 2022-10
Hauptverfasser: Liang, Danfu, Rodriguez, Lexter Savio, Zhou, Haitao, Zhu, Yifu, Li, Hebin
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Sprache:eng
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Zusammenfassung: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2210.10115