An atom fiber for guiding cold neutral atoms
X. Luo, P. Krüger, K. Brugger, S. Wildermuth, H. Gimpel, M. W. Klein, S. Groth, R. Folman, I. Bar-Joseph, J. Schmiedmayer
Abstract
We present an omnidirectional matter wave guide on an atom chip. The rotational symmetry of the guide is maintained by a combination of two current carrying wires and a bias field pointing perpendicular to the chip surface. We demonstrate guiding of thermal atoms around more than two complete turns along a spiral shaped 25mm long curved path (curve radii down to 200μm) at various atom--surface distances (35-450μm). An extension of the scheme for the guiding of Bose-Einstein condensates is outlined.
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