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Q: Fachverband Quantenoptik und Photonik
Q 25: Poster – Cold Atoms and Molecules, Matter Waves (joint session Q/A/MO)
Q 25.27: Poster
Dienstag, 11. März 2025, 14:00–16:00, Tent
Quantum gas microscopy of Rydberg-dressed extended Bose Hubbard models — •David Gröters1,2,3, Pascal Weckesser1,2, Kritsana Srakaew1,2, David Wei1,2, Daniel Adler1,2, Suchita Agrawal1,2, Immanuel Bloch1,2,3, and Johannes Zeiher1,2,3 — 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
The competition of different length scales in quantum many-body systems leads to various novel phenomena, including the emergence of correlated dynamics or non-local order. Off-resonant optical coupling to Rydberg states, known as Rydberg dressing, has been proposed as a versatile tool to engineer long-range interactions in lattice-based quantum simulators. So far however, this approach has been limited by collective losses, limiting Rydberg dressing to immobile spin systems.
On this poster, I present our recent findings on realizing an itinerant one-dimensional extended Bose Hubbard model using Rydberg-dressed 87Rb atoms in optical lattices [1]. Here, we reduce the collective losses by two orders of magnitude using stroboscopic dressing. Harnessing our quantum gas microscope, we probe the correlated out-of-equilibrium dynamics of extended-range repulsively-bound pairs at low filling, and kinetically-constrained "hard rods" at half filling. Near equilibrium, we observe density ordering when adiabatically turning on the extended-range interactions.
[1] https://arxiv.org/abs/2405.20128
Keywords: Quantum simulation; Extended Hubbard model; Repulsive binding; Optical lattices; Rydberg dressing