Mainz 2026 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 64: Poster – Ultra-cold atoms, ions and BEC (joint session A/Q)
Q 64.36: Poster
Donnerstag, 5. März 2026, 17:00–19:00, Philo 1. OG
Realizing and probing programmable 2D optical lattices with flexible geometries and connectivity — •Sheng-Hung Wang1,2, Kritsana Srakaew1,2, David Wei1,2, Daniel Adler1,2, Suchita Agrawal1,2, David Gröters1,2, Pascal Weckesser1,2, Immanuel Bloch1,2,3, and Johannes Zeiher1,2,3 — 1Max-Planck-Institut für Quantenoptik, Garching, Germany — 2Munich Center for Quantum Science and Technology, Munich, Germany — 3Fakultät für Physik, Ludwig-Maximilians-Universität, Munich, Germany
Optical lattices are a versatile platform for studying complex and highly correlated quantum many-body systems. For most experiments, the layout of the confining lattice beams restricts the accessible lattice geometries and the underlying physics. We recently overcame this challenge by introducing a passively phase-stable tunable lattice, which offers programmable cell connectivity and flexible geometries, including square, triangular, Lieb, and Kagome lattices [1]. In this poster, we present our tunable lattice geometries and demonstrate out-of-equilibrium quantum walks for different settings. Furthermore, we introduce a new upgrade that will enable mid-sequence tunabilty, allowing for doublon and spin-resolved imaging. In addition, we discuss cooling techniques that will boost the overall preparation time for ultracold atoms in optical lattices.
[1] Wei et al. Physical Review X 13.2 (2023): 021042.
Keywords: optical lattice; superfluid; mott insulator