Continuous loading of a magnetic trap

Details Continuous loading of a magnetic trap Continuous loading of a magnetic trap

2000-11-29

arxiv.org/abs/quant-ph/0011113v2

Physics

Quantum Physics

4 pages, 4 figures, version 2, modified references, included additional detailed information, minor changes in figure 3 and in

Scientific paper

10.1103/PhysRevA.64.031405

We have realized a scheme for continuous loading of a magnetic trap (MT). ^{52}Cr atoms are continuously captured and cooled in a magneto-optical trap (MOT). Optical pumping to a metastable state decouples atoms from the cooling light. Due to their high magnetic moment (6 Bohr magnetons), low-field seeking metastable atoms are trapped in the magnetic quadrupole field provided by the MOT. Limited by inelastic collisions between atoms in the MOT and in the MT, we load 10^8 metastable atoms at a rate of 10^8 atoms/s below 100 microkelvin into the MT. After loading we can perform optical repumping to realize a MT of ground state chromium atoms.

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