A gradient and offset compensated Ioffe–Pritchard trap for Bose–Einstein condensation experiments

Journal of Physics B   45   235301 (2012)

V. Bolpasi, J. Grucker, M. J. Morrissey, and W. von Klitzing

http://dx.doi.org/10.1088/0953-4075/45/23/235301   or   http://doi.org/10.1088/0953-4075/45/23/235301

bolpasi2012jpb-highlightAbstract: The Ioffe–Pritchard trap is the workhorse of modern cold atom physics. Here, we present a novel Ioffe–Pritchard trap coil configuration based purely on circular coils. By eliminating the traditional Ioffe bars one can increase the gradient and thus the radial trapping frequency by almost a factor 2. We also present a method to achieve minimal coupling between the gradient, curvature and offset fields of the trap, thus facilitating the dynamic control of the trapping frequencies and aspect ratio.

This paper was selected by the editors as one of the highlights of 2012 of Journal of Optics B.