Accumulation of chromium metastable atoms into an Optical Trap

Abstract

We report the fast accumulation of a large number of metastable 52Cr atoms in a mixed trap, formed by the superposition of a strongly confining optical trap and a quadrupolar magnetic trap. The steady state is reached after about 400 ms, providing a cloud of more than one million metastable atoms at a temperature of about 100 microK, with a peak density of 10^{18} atoms.m^{-3}. We have optimized the loading procedure, and measured the light shift of the 5D4 state by analyzing how the trapped atoms respond to a parametric excitation. We compare this result to a theoretical evaluation based on the available spectroscopic data for chromium atoms.

arXiv comment7 pages, 5 Figures

References in corpus (6)

• Bose-Einstein condensation of chromium
• All Optical Formation of an Atomic Bose-Einstein Condensate
• Quantum spins mixing in spinor Bose-Einstein condensates
• Continuous loading of a magnetic trap
• Simultaneous Magneto-Optical Trapping of Bosonic and Fermionic Chromium Atoms
• Production of a chromium Bose-Einstein condensate

Cited by in corpus (10)

• Dipolar physics: A review of experiments with magnetic quantum gases
• All-Optical Production of Chromium Bose-Einstein Condensates
• Spontaneous demagnetization of a dipolar spinor Bose gas at ultra-low magnetic field
• Collective excitations of a dipolar Bose-Einstein condensate
• Thermodynamics of a Bose Einstein condensate with free magnetization
• Anisotropic polarizability of erbium atoms
• Double-degenerate Fermi mixtures of ${}^6$Li and ${}^{53}$Cr atoms
• Optimized loading of an optical dipole trap for the production of Chromium BECs
• Averaging out magnetic forces with fast rf-sweeps in an optical trap for metastable chromium atoms
• Cooling All External Degrees of Freedom of Optically Trapped Chromium Atoms Using Gray Molasses