Spin Gradient Demagnetization Cooling of Ultracold Atoms

Spin Gradient Demagnetization Cooling of Ultracold Atoms

We demonstrate a new cooling method in which a time-varying magnetic field gradient is applied to an ultracold spin mixture. This enables preparation of isolated spin distributions at positive and negative effective spin temperatures of ±50   pK. The spin system can also be used to cool other degree...

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Main Authors: Medley, Patrick M. (Contributor), Weld, David M. (Contributor), Miyake, Hirokazu (Contributor), Pritchard, David E. (Contributor), Ketterle, Wolfgang (Contributor)
Other Authors: Massachusetts Institute of Technology. Department of Physics (Contributor), MIT-Harvard Center for Ultracold Atoms (Contributor)
Format: Article
Language:English
Published: American Physical Society, 2011-11-18T19:54:01Z.
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