ULTRACOLD ATOMS

Making ions cooler

Cooling of trapped ions with a neutral buffer gas makes the study of atom–ion hybrid systems possible in the quantum regime. The new record low achieved opens the door to numerous opportunities, including full control over the atom–ion interactions.

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Fig. 1: Low-energy atom–ion collisions.

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Correspondence to Carlo Sias.

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Sias, C. Making ions cooler. Nat. Phys. (2020). https://doi.org/10.1038/s41567-019-0773-4

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