Dresden 2011 – scientific programme
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A: Fachverband Atomphysik
A 29: Ultracold Atoms: Trapping and Cooling 2 (with Q)
A 29.10: Talk
Friday, March 18, 2011, 12:45–13:00, HSZ 02
Optimized magnetic lattices for ultracold atomic ensembles — •Roman Schmied1, Dietrich Leibfried2, Robert Spreeuw3, and Shannon Whitlock4 — 1Departement Physik, Universität Basel, Schweiz — 2National Institute of Standards and Technology, Boulder, CO, USA — 3Van der Waals–Zeeman Instituut, Universiteit van Amsterdam, The Netherlands — 4Physikalisches Institut, Universität Heidelberg
Atom chips provide a versatile and reliable laboratory for quantum-mechanical experiments with ultracold atoms. The next generation of atom chips calls for a dramatic increase in the complexity of the spatially structured electromagnetic fields required for trapping and manipulating these atoms. We introduce a general method* for designing tailored lattices of magnetic microtraps for ultracold atoms on the basis of patterned permanently magnetized films. A fast numerical algorithm is used to automatically generate patterns that provide optimal atom confinement while respecting the desired lattice topology and trap parameters. This will allow atom-chip based quantum technology to be extended to arrays of microtraps with state-dependent potentials, opening the way to constructing quantum processors and quantum simulators through interacting ultracold atoms.
* R. Schmied et al., New J. Phys. 12, 103029 (2010)