W. Rooijakkers | Searcharxiv

arXiv2003

Compact, Robust Source of Cold Atoms for Efficient Loading of a Magnetic Guide

We report a compact (<20cm3), robust source for producing a bright flux of cold atoms, which can be loaded efficiently into a magnetic guide. A continuous flux of up to 8 x 109 87Rb atoms/s have been produced from this 2D+ vapor cell MOT. The flux had a divergence of 12.5 mrad and velocity could be controlled in the range 2-15 m/s. This flux was coupled continuously into a magnetic guide with high efficiency.

physics.atom-ph↗

arXiv2001

Novel Ferromagnetic Atom Waveguide with in situ loading

Magneto-optic and magnetostatic trapping is realized near a surface using current carrying coils wrapped around magnetizable cores. A cloud of 10^7 Cesium atoms is created with currents less than 50 mA. Ramping up the current while maintaining optical dissipation leads to tightly confined atom clouds with an aspect ratio of 1:1000. We study the 3D character of the magnetic potential and characterize atom number and density as a function of the applied current. The field gradient in the transverse dimension has been varied from < 10 G/cm to > 1 kG/cm. By loading and cooling atoms in-situ, we have eliminated the problem of coupling from a MOT into a smaller phase space.

physics.atom-ph↗