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A: Fachverband Atomphysik
A 26: Poster V
A 26.2: Poster
Wednesday, March 13, 2024, 17:00–19:00, Tent C
Towards a potassium quantum gas miscroscope — •Scott Hubele1,2, Martin Schlederer1,2, Alexandra Mozdzen1,2, Guillaume Salomon1,2, and Henning Moritz1,2 — 1Institute for Quantum Physics, University of Hamburg, Hamburg, Germany — 2Hamburg Centre for Ultrafast Imaging, University of Hamburg, Hamburg, Germany
Understanding many-body quantum systems, both in and out of equilibrium, is often computationally challenging due to the large Hilbert space of the systems of interest. This makes quantum simulation very attractive, especially when the relevant observables and their correlations can be measured directly. The Bose-Hubbard model for instance, which describes interacting bosons in lattices, can be well simulated using ultracold atoms loaded into optical lattices. High-resolution imaging can then be used to resolve the occupation of each lattice site, in what is known as a quantum gas miscroscope.
Here, we present our progress towards building a quantum gas microscope using ultracold potassium-39, to study the Bose-Hubbard model in 2D. We create an interfering 2D optical lattice by sending a single 1064nm beam twice through the science chamber at orthogonal angles, and retroreflecting it. A shallow angle vertical lattice is used to confine the atoms along the z direction. After some time evolution, a high-NA objective will then used to collect fluorescence from the atoms using Raman sideband imaging. Characterization of our optical lattices is presented as well as progress towards single-site resolved imaging.
Keywords: Optical lattice; Quantum gas microscope; Hubbard model