Rapid production of ⁸⁷Rb BECs in a combined magnetic and optical potential

2009/04/21 by Y. -J. Lin, A. R. Perry, R. L. Compton +2 · 2 citations
Physics and Astronomy · #cond-mat.quant-gas

paper · pdf · doi:10.1103/physreva.79.063631

arxiv created 2009/04/21 · arxiv updated 2015/05/13

Abstract

We describe an apparatus for quickly and simply producing \Rb87 Bose-Einstein condensates. It is based on a magnetic quadrupole trap and a red detuned optical dipole trap. We collect atoms in a magneto-optical trap (MOT) and then capture the atom in a magnetic quadrupole trap and force rf evaporation. We then transfer the resulting cold, dense cloud into a spatially mode-matched optical dipole trap by lowering the quadrupole field gradient to below gravity. This technique combines the efficient capture of atoms from a MOT into a magnetic trap with the rapid evaporation of optical dipole traps; the approach is insensitive to the peak quadrupole gradient and the precise trapping beam waist. Our system reliably produces a condensate with N≈2×10⁶ atoms every 16\second.

Cited by

• The continuous spectrum of bound states in expulsive potentials: self-trapping in the linear system
• Preparation of quasi-two-dimensional Bose mixture of ultracold ²³Na and ⁸⁷Rb atoms

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