Journal of Experimental and Theoretical Physics

Zeeman Spectroscopy of Ultracold Thulium Atoms

V. V. Tsyganok, D. A. Pershin, Vladimir Khlebnikov, E. T. Davletov, Alexey V. Akimov

Published Feb 1, 2019• 7 citations

Abstract

Abstract Dipolar ultracold gases are of great interest for quantum simulation experiments. The first step of such a simulation is deep cooling of atoms in a pre-specified internal state. The results of detailed studies of the formation of a spin-polarized cloud of thulium atoms in a dipole trap are presented. We have calibrated the magnetic field by means of radio-frequency Zeeman spectroscopy and measured the polarization of atoms in an optimized trap by the beam expansion method in a magnetic field gradient based on this calibration. We have obtained 1.1 × 106 atoms at a temperature of 27 μK with polarization 〈mF〉 = –3.95 ± 0.12.

DOI: 10.1134/s1063776119010059

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