Bose-Einstein Condensation of Erbium

Details Bose-Einstein Condensation of Erbium Bose-Einstein Condensation of Erbium

2012-04-08

arxiv.org/abs/1204.1725v1

Physics

Condensed Matter

Quantum Gases

4 pages, 3 figures

Scientific paper

We report on the achievement of Bose-Einstein condensation of erbium atoms and on the observation of magnetic Feshbach resonances at low magnetic field. By means of evaporative cooling in an optical dipole trap, we produce pure condensates of $^{168}$Er, containing up to $7 \times 10^{4}$ atoms. Feshbach spectroscopy reveals an extraordinary rich loss spectrum with six loss resonances already in a narrow magnetic-field range up to 3 G. Finally, we demonstrate the application of a low-field Feshbach resonance to produce a tunable dipolar Bose-Einstein condensate and we observe its characteristic d-wave collapse.

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