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Bose–Einstein condensates

BECs from the fridge

Large ensembles of atoms can be buffer-gas loaded into a magnetic trap and further evaporatively cooled all the way down to quantum degeneracy. The approach has now been shown to provide an alternative — and potentially general — route to Bose–Einstein condensation.

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Figure 1: Key steps on the pathway across the density (n) versus absolute temperature (T) plane towards a BEC of gaseous He*.

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Friedrich, B. BECs from the fridge. Nature Phys 5, 712–714 (2009). https://doi.org/10.1038/nphys1417

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