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arXiv · 0807.3272

Formation of ultracold polar molecules in the rovibrational ground state

J. Deiglmayr·A. Grochola·M. Repp·K. Mörtlbauer·C. Glück·J. Lange·O. Dulieu·R. Wester·M. Weidemüller
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Abstract

Ultracold LiCs molecules in the absolute ground state X$^1\Sigma^+$, v"=0, J"=0 are formed via a single photo-association step starting from laser-cooled atoms. The selective production of v"=0, J"=2 molecules with a 50-fold higher rate is also demonstrated. The rotational and vibrational state of the ground state molecules is determined in a setup combining depletion spectroscopy with resonant-enhanced multi-photon ionization time-of-flight spectroscopy. Using the determined production rate of up to 5x10^3 molecules/s, we describe a simple scheme which can provide large samples of externally and internally cold dipolar molecules.

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J. Deiglmayr, A. Grochola, M. Repp, K. Mörtlbauer, C. Glück, J. Lange, O. Dulieu, R. Wester, M. Weidemüller. 2008-07-21. Formation of ultracold polar molecules in the rovibrational ground state. https://doi.org/10.1103/physrevlett.101.133004

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