Hannover 2016 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 58: Poster: Quantum Optics and Photonics IV
Q 58.69: Poster
Donnerstag, 3. März 2016, 16:30–19:00, Empore Lichthof
Deterministic Preparation of Few-Fermion Systems in Actively Stabilized Potential Wells — •Vincent M. Klinkhamer, Jan-Hendrik Becher, Andrea Bergschneider, Michael Dehabe, Simon Murmann, Gerhard Zürn, and Selim Jochim — Physikalisches Institut der Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg, Germany
In our experiment we control the total wave function of several interacting 6Li atoms trapped in multiple coupled dimple traps. In our previous experiments with a double-well potential, we were able to prepare two-particle eigenstates by adiabatically tuning the depth of the two wells with an acousto-optic deflector (AOD). However, the ramps of the optical potential had to be optimized experimentally and we also observed drifts on the scale of the superexchange energy J2/U. This inhibited our progress towards larger systems.
Here we present the first results of our new stabilization setup for the optical potential. It can directly produce potential landscapes and ramps by monitoring the potential on a camera in real time. At the same time, it provides a relative stability of 5 × 10−4. This will allow us to conveniently create potentials with multiple sites. We are going to deterministically prepare, e.g., one-dimensional Hubbard chains and four-site plaquettes. Thanks to the control over the preparation, it will also be possible to introduce various amounts of doping into our system.