Tuning the dipolar interaction in quantum gases

Details Tuning the dipolar interaction in quantum gases Tuning the dipolar interaction in quantum gases

2002-04-16

arxiv.org/abs/cond-mat/0204352v3

Physics

Condensed Matter

4 pages, 3 figures. Submitted to PRL. (v3: Figure 3 replaced)

Scientific paper

10.1103/PhysRevLett.89.130401

We have studied the tunability of the interaction between permanent dipoles in Bose-Einstein condensates. Based on time-dependent control of the anisotropy of the dipolar interaction, we show that even the very weak magnetic dipole coupling in alkali gases can be used to excite collective modes. Furthermore, we discuss how the effective dipolar coupling in a Bose-Einstein condensate can be tuned from positive to negative values and even switched off completely by fast rotation of the orientation of the dipoles.

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