Dresden 2011 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 27: Ultra-cold atoms, ions and BEC III

Q 27.2: Talk

Wednesday, March 16, 2011, 11:00–11:15, BAR 106

Finite temperature interactions between cold atoms and nanostructures — Johannes Märkle, Benjamin Jetter, Philipp Schneeweiß, Michael Gierling, Gabriela Visanescu, Peter Federsel, Dieter Kern, Andreas Günther, József Fortagh, and •Thomas Judd — CQ Center for Collective Quantum Phenomena and their Applications, Eberhard-Karls-Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen, Germany

There is currently much interest in combining cold atoms with nanofabricated devices such as carbon nanotubes. Such research studies the interface between quantum gases and solid devices, and the interface between quantum and classical physics. It also provides insight into nanomachines, nanoelectronics, and macromolecular control. In such systems the role of temperature is important and related to quantum coherence properties.

Here we study quantum reflection and inelastic scattering of atoms from carbon nanotubes and show how cold atom experiments can extract information about nanostructures' van der Waals potentials. We also develop a novel finite temperature theory for cold atoms and study how solid structures may be used to cool and create coherence in quantum gases. We also explore the reverse case in which a cold atom cloud is used to cool solid objects.