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A: Fachverband Atomphysik
A 26: Posters: BECs, ultracold gases and plasmas
A 26.7: Poster
Thursday, March 13, 2008, 16:30–18:30, Poster C3
Interaction of Ultra-Cold Atoms with Individual Carbon Nanotubes — •Gabriela Visanescu1, Philipp Schneeweiß1, Michael Gierling1, Hannah Schefzyk1, Andreas Günther1, Germán Sinuco2, Thomas Judd2, Carsten Weiß3, Reinhold Walser3, and József Fortágh1 — 1Physikalisches Institut, Universität Tübingen, Auf der Morgenstelle 14, D-72076 Tübingen — 2School of Physics and Astronomy, University of Nottingham, University Park, Nottingham, NG7 2RD — 3Institut für Quantenphysik, Universität Ulm, D-89069 Ulm
We designed an atom chip to study the interaction of ultra-cold 87Rb atoms with an individual carbon nanotube (CNT). The chip is loaded from a magnetic trap via adiabatic transfer. Once on the chip, a 4-wire waveguide together with a conveyor belt facilitate moving the atoms to the CNT. Precise control over position and speed allow the study of atom scattering and quantum reflection from the tube.
As outlined in Ref. 1, the interaction will be dominated by the Casimir-Polder-potential between atoms and the CNT. Observing the atomic motion by absorption imaging as well as single atom detection techniques, we will be able to experimentally determine the Casimir-Polder-potential.
[1] R. Fermani, S. Scheel, and P.L. Knight, Phys. Rev. A 75, 062905 (2007)