Atom fiber for omnidirectional guiding of cold neutral atoms.
We present an omnidirectional matter waveguide on an atom chip. The guide is based on a combination of two current-carrying wires and a bias field pointing perpendicular to the chip surface. Thermal atoms are guided for more than two complete turns along a 25-mm-long spiral path (with curve radii as short as 200 microm) at various atom-surface distances (35-450 microm). An extension of the scheme for the guiding of Bose-Einstein condensates is outlined.
Physikalisches Institut, Universität Heidelberg, D-69120 Heidelberg, Germany.
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X
Luo
P
P
Krüger
K
K
Brugger
S
S
Wildermuth
H
H
Gimpel
M W
MW
Klein
S
S
Groth
R
R
Folman
I
I
Bar-Joseph
J
J
Schmiedmayer