Osnabrück 2002 – scientific programme
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Q: Quantenoptik
Q 301: Poster: Fallen, Kühlung, Teilchenoptik
Q 301.11: Poster
Wednesday, March 6, 2002, 11:00–13:00, Schloss
Properties of an optical conveyor belt — •Yevhen Miroshnychenko, Stefan Kuhr, Wolfgang Alt, Dominik Schrader, Igor Dotsenko, Victor Gomer, and Dieter Meschede — Institut für Angewandte Physik, Wegelerstr. 8, 53115 Bonn
A standing wave dipole trap is loaded with a prescribed number of cesium atoms from a magneto-optical trap. By controlling the motion of the standing wave we transport the atom with submicrometer precision over macroscopic distances [1]. The displaced atom is observed by position-sensitive fluorescence detection in the dipole trap. We successfully transport one atom over the maximum distance of 15 mm and achieve displacement efficiencies of almost 100% for atomic accelerations of up to 105 m/s2 which is close to the expected fundamental limits [2]. Adiabatic cooling allows us to perform temperature measurements of a single atom in the dipole trap. We also investigate the possibility of consecutive loading of the conveyor belt to generate a string of atoms with well-defined separation, which would create an "atomic beam" with sub-Poissonian statistics and could be used for controlled manipulation of atoms in cavity QED experiments (an "atomic shift register").
[1] S. Kuhr et al., Science 293, 278 (2001)
[2] D. Schrader et al., Appl. Phys. B. (2001), http://dx.doi.org/10.1007/ s003400100722