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Observation of dipole-dipole interaction in a degenerate quantum gas

J. Stuhler·A. Griesmaier·T. Koch·M. Fattori·T. Pfau·S. Giovanazzi·P. Pedri·L. Santos
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Abstract

We have investigated the expansion of a Bose-Einstein condensate (BEC) of strongly magnetic chromium atoms. The long-range and anisotropic magnetic dipole-dipole interaction leads to an anisotropic deformation of the expanding Cr-BEC which depends on the orientation of the atomic dipole moments. Our measurements are consistent with the theory of dipolar quantum gases and show that a Cr-BEC is an excellent model system to study dipolar interactions in such gases.

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J. Stuhler, A. Griesmaier, T. Koch, M. Fattori, T. Pfau, S. Giovanazzi, P. Pedri, L. Santos. 2005-09-23. Observation of dipole-dipole interaction in a degenerate quantum gas. https://doi.org/10.1103/physrevlett.95.150406

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