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Ultracold molecules

The coldest polar region

Polar diatomic molecules, consisting of potassium and rubidium, have been created with density and temperature close to the regime of quantum degeneracy.

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Figure 1: The formation process for ultracold KRb molecules, now demonstrated by Ni et al.1.


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DeMille, D., Hudson, E. The coldest polar region. Nature Phys 4, 911–912 (2008).

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