SAMOP 2023 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 20: Poster II
A 20.24: Poster
Mittwoch, 8. März 2023, 16:30–19:00, Empore Lichthof
Realizing and probing programmable 2D optical lattices with flexible geometries and connectivity — •Suchita Agrawal1,2, David Wei1,2, Daniel Adler1,2, Kritsana Srakaew1,2, Pascal Weckesser1,2, Immanuel Bloch1,2,3, and Johannes Zeiher1,2 — 1Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany — 2Munich Center for Quantum Science and Technology (MCQST), 80799 Munich, Germany — 3Fakultät für Physik, Ludwig-Maximilians-Universität, 80799 Munich, Germany
Over the past decade, ultracold atoms in optical lattices have become a vital platform for experimental quantum simulation, enabling precise studies of a variety of quantum many-body problems. For most experiments, the layout of the confining lattice beams restricts the accessible lattice configurations and thus the underlying physics. Here, we present a novel tunable lattice, which provides programmable unit cell connectivity and in principle allows for changing the geometry mid-sequence. Our approach builds on the generation of phase-stable realisation of a square or triangular base lattice combined with microscopically projected repulsive local potential patterns. With this technique, we realise Lieb and Kagome lattices, and benchmark the various configurations by exploring single particle quantum walks. We explore many-body physics in these lattices by observing parity fluctuations associated with the superfluid-to-Mott insulator transition. As an outlook, we will explore how the presented lattices can be applied for spin-selective imaging as well as doublon detection.