Hamburg 2009 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 11: Quantengase: Bosonen im Gitter II

Q 11.5: Vortrag

Montag, 2. März 2009, 17:30–17:45, VMP 6 HS-A

An Optical Microscope for 2D Quantum Gases — •Simon Fölling, Jonathon Gillen, Waseem Bakr, Amy Peng, Peter Unterwaditzer, and Markus Greiner — Department of Physics, Harvard University and Harvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USA

Ultracold quantum gases are used as models for studying fundamental questions of modern condensed matter physics with atomic physics experiments. They allow for creating very clean implementations of complex many-body systems, and can enable the realization of tools for manipulating and probing the gas which are not available for classical condensed matter systems. We will present the implementation of an experiment that enables the preparation of a cold quantum gas in a single, strongly two-dimensional trapping potential. The atoms are located a few micrometers from a glass surface, allowing for optical access with a very high numerical aperture of NA=0.8. This enables us to image and manipulate the quantum gas with a resolution on the scale of 500 nm, for example by generating optical lattices by direct projection through the lens and flourescence imaging inside the trap.