Modified "delta kick cooling" for studies of atomic tunneling
S. H. Myrskog, J. K. Fox, H. S. Moon, H. A. Kim, J. B. Kim, A. M. Steinberg
Abstract
We present progress towards a planned experiment on atomic tunneling of ultra-cold Rb atoms. As a first step in this experiment we present a realization of an improved form of "delta-kick cooling." By application of a pulsed magnetic field, laser cooled Rb atoms are further cooled by a factor of 10 (in 1-D) over the temperature out of molasses. Temperatures below 700 nK are observed. The technique can be used not only to cool without fundamental limit (but conserving phase-space density), but also to focus atoms, and as a spin-dependent probe.
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