Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 15: Poster: Quantum Optics and Photonics I

Q 15.48: Poster

Montag, 23. März 2015, 17:00–19:00, C/Foyer

Towards many body physics with ultracold atoms in optical microtrap arrays — •Martin Sturm, Malte Schlosser, Gerhard Birkl, and Reinhold Walser — Institut für Angewandte Physik, TU Darmstadt

Ultracold atoms in optical lattices have proven to be a powerful toolbox for quantum simulation of many body physics e.g., solid state systems. Standard optical lattices are produced by the superposition of standing wave laser fields and have been used for simulating large homogeneous lattice systems. In recent years single-site addressability in optical lattices has attracted considerable interest since it allows for the direct observation and control of local properties.

We propose an experimental scheme to implement quantum simulation of many body systems using ultracold Rubidium atoms in optical dipole traps generated by microlens arrays. This allows to produce 1D and 2D optical lattices for which the task of single site control can be implemented by selectively addressing each microlens. This setup has already been used for quantum computation experiments [1]. We set the superfluid-insulator phase transition of the Bose-Hubbard model as a benchmark to demonstrate the accessibility of relevant many body regimes with this setup. We further investigate new possibilities that arise with the tunable shape and size of the system e.g., systematic investigation of finite size effects and quantum transport.

M. Schlosser et al., Quantum Inform. Process. 10 907-924