Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 32: Poster: Quantum gases, ultracold atoms and molecules

Q 32.66: Poster

Mittwoch, 19. März 2014, 16:30–18:30, Spree-Palais

Holographic detection approach for single-site detection of ultracold atoms in an optical lattice — •Daniel Hoffmann, Benjamin Deissler, and Johannes Hecker Denschlag — Institut für Quantenmaterie, Universität Ulm, Deutschland

Site-resolved imaging has recently been a key tool in studies of ultracold atoms in optical lattices. However, the large-NA optics and large photon scattering rates make this technique technically difficult to implement. Here, we present a holographic detection scheme, related to the classical Leith-Upatnieks technique, which enables a site-resolved detection of single atoms with a weak probe beam incident on the atoms and a strong reference beam. We discuss a possible detection setup and perform simulations on such a process. We show that the detection can be performed even with an incident laser intensity well below the saturation intensity of the atomic transition. Moreover, the detection scheme can be realized using only standard catalog lenses.