Dipolar Bose-Einstein condensation of 168Er and anisotropic expansion dynamics

作者：Song, Rui; Zhang, Si-Hui; Liao, Wen-Min; Wang, Jie^*; Deng, Shu-Jin; Wu, Hai-Bin^*

来源：Results in Physics, 2023, 52: 106795.

DOI：10.1016/j.rinp.2023.106795

• Lanthanide atoms
• Bose-Einstein condensation
• Feshbach resonance
• Anisotropic expansion

We report on the realization of Bose-Einstein condensation (BEC) of 168Er atoms in a crossed optical dipole trap. A magneto-optical trap is realized with just one laser driving the narrow-line transition which increases the phase space density and facilitates the evaporative cooling. A pure BEC with 3 x 104 atoms is achieved by forced evaporative cooling. The complex Feshbach resonance and anisotropic expansion of 168Er are investigated by the loss spectroscopy and controlling the rotating dipoles.