Tuning the Dipolar Interaction in Quantum Gases
S. Giovanazzi5th Institute of Physics, University of Stuttgart, D-70550 Stuttgart, GermanyAxel Görlitz5th Institute of Physics, University of Stuttgart, D-70550 Stuttgart, GermanyTilman Pfau5th Institute of Physics, University of Stuttgart, D-70550 Stuttgart, Germany
2002en
ABI
Annotatsiya
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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