Hannover 2016 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 58: Poster: Quantum Optics and Photonics IV

Q 58.86: Poster

Donnerstag, 3. März 2016, 16:30–19:00, Empore Lichthof

Towards quantum gas microscopy of ultracold potassium atoms — •Tobias Wintermantel, Emil Pavlov, Alda Arias, Stephan Helmrich, and Shannon Whitlock — Physikalisches Institut, Universität Heidelberg, Im Neuenheimer Feld 226, 69120 Heidelberg

Ultracold quantum gases in optical lattices are a versatile model system for engineering many-body quantum systems. Additionally, the advent of single-atom-resolution imaging techniques enables one to extract an unprecedented degree of information on the spatial correlations.

We are constructing a new experiment featuring fermionic or bosonic potassium atoms in optical lattices with reduced dimensional confinement. A special aspect will be the ability to introduce and control long-range interactions between the atoms via optical dressing of Rydberg states. A high-resolution imaging setup for probing these quantum gases, mainly consisting of an in-vacuum high-NA objective lens and a high quantum efficiency EMCCD camera, is currently under construction. The expected imaging quality depends, on the one hand, on the constraints of the imaging system (numerical aperture, aberrations and detector noise) and on the other hand, on physical constraints such as the number of photons which can be scattered before the atoms are heated and lost out of the microtraps. We present our progress in quantifying these effects for imaging Rydberg-dressed quantum fluids.