Physics – Quantum Physics
Scientific paper
2009-12-11
A Aghajani-Talesh et al, J. Phys. B: At. Mol. Opt. Phys. 42 (2009) 245302
Physics
Quantum Physics
10 pages, 5 figures
Scientific paper
10.1088/0953-4075/42/24/245302
The capture of a moving atom by a non-dissipative trap, such as an optical dipole trap, requires the removal of the excessive kinetic energy of the atom. In this article we develop a mechanism to harvest ultra cold atoms from a guided atom beam into an optical dipole trap by removing their directed kinetic energy. We propose a continuous loading scheme where this is accomplished via deceleration by a magnetic potential barrier followed by optical pumping to the energetically lowest Zeeman sublevel. We theoretically investigate the application of this scheme to the transfer of ultra cold chromium atoms from a magnetically guided atom beam into a deep optical dipole trap. We discuss the realization of a suitable magnetic field configuration. Based on numerical simulations of the loading process we analyze the feasibility and efficiency of our loading scheme.
Aghajani-Talesh Anoush
Falkenau Markus
Griesmaier Axel
Pfau Tilman
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