Berlin 2014 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 66: Ultracold atoms and molecules II
Q 66.4: Vortrag
Freitag, 21. März 2014, 14:45–15:00, DO26 208
Ground state cooling in an 1D optical lattice — •Ricardo Gomez, Carsten Robens, Isabelle Boventer, Jonathan Zopes, Wolfgang Alt, Andrea Alberti, and Dieter Meschede — Institut für Andgewante Physik (IAP), Bonn, Germany
Discrete-time quantum walks of neutral atoms in optical lattices allows to experimentally investigate complex transport phenomena, where the single constituents are allowed to coherently interact with each other .
We report on the ground state cooling of neutral atoms in the ground state of a 1D optical lattice. Microwave and Raman sideband cooling are used as cooling mechanisms for the axial and radial direction, respectively. To achieve a tight confinement in the radial direction, we use a blue-detuned doughnut-shaped dipole trap overlapped to the optical lattice.
The preparation in the motional ground state opens the way to use onsite coherent collisions between atoms to realize interacting quantum walks.
 A. Ahlbrecht, A. Alberti, D. Meschede, V. B. Scholz, A. H. Werner, and R. F. Werner, Molecular binding in interacting quantum walks, New J. Phys. 14, 073050 (2012)