Er dipolor simulator
We report on the experimental realization of Bose–Einstein condensate (BEC) of Er atoms with tunable s-wave and dipolar interactions in a newly developed apparatus. Here, we describe an efficient method for trapping slow Er atoms in a narrow linewidth magneto-optical trap. After evaporative cooling in a crossed optical dipole trap, we achieve a spin-polarized condensate of atoms at the temperature of 50 nK. The efficient preparation of ultracold erbium bosons offers new possibilities for studying many-body physics with dipolar interactions.
We develope a efficient method for slowing erbium atoms by implementing a pair of angled slowing beams with respect to the Zeeman slower axis. The second-stage slowing beams further slow down atoms exiting from the Zeeman slowe and enable the narrow-line MOT to trap atoms exiting from the Zeeman slower with higher velocity. This scheme is particularly useful when the Zeeman slower is at low optical power without the conventional transverse cooling between an oven and a Zeeman slower.