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Q: Quantenoptik

Q 3: Atom Optics I

Q 3.4: Vortrag

Montag, 2. April 2001, 16:30–16:45, H 104

Experiments with Atom Chips — •Karolina Brugger¹, Donatella Cassettari², Ron Folman¹, Albrecht Haase¹, Björn Hessmo³, Peter Krüger¹, and Jörg Folman¹ — ¹Physikalisches Institut, Universität Heidelberg, Philosophenweg 12, 69120 Heidelberg — ²Clarendon Laboratory, Department of Physics, University of Oxford, Oxford OX1 3PU, UK — ³Department of Quantum Chemistry, Uppsala University, 75120 Uppsala, Sweden

We have demonstrated trapping and guiding of neutral atoms in microscopic potentials created by nanofabricated structures on a surface (Atom Chip) [1]. We achieved trap frequencies of more than 100 kHz which are required for quantum information processing. The µK cold atoms in the traps with the corresponding ground state size of less than 100 nm are located a few tens of microns above the 300 K hot chip surface. This situation enables us to study many interesting phenomena concerning cold atoms being manipulated closed to surfaces.

Here we present some of the experiments that can be done on an Atom Chip by using the potentials created by current carrying and charged microstructures. An example of an already implemented integrated atom optical device is a Y-shaped beam splitter [2].

[1] R. Folman et al., Phs. Rev. Lett. 84, 4749 (2000).

[2] D. Cassettari et al., Phys. Rev. Lett., in print (2000).