Year: 2026
Type: preprint
Abstract: We show that, in appropriate regimes, ultracold collisionally shielded molecules in an optical lattice realize a controlled extended Hubbard model, despite their large-radius hard-core repulsion. We compute the Hubbard parameters and show lattice depth and microwave-induced dipolar interactions provide flexible, independent control of on- and off-site interactions. This makes shielded molecules a powerful platform for extended Hubbard models and enables an interaction microscope that can distinguish inter-hole interactions in doped Mott insulators - crucial to superconductivity and strange metallicity - that are indistinguishable with quantum gas microscopy alone.
Source: arXiv (Cornell University)
Institutions: Radboud University Nijmegen, Rice University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G1350789221, G255829176, G4357913612, Programs on Critical Problems in Physics, Astrophysics and Biophysics at the Aspen Center for Physics, NRT-QISE: Broad Research in Interdisciplinary Development for Groundbreaking Engineering in Cavity Quantum Electrodynamics, G7039555113, Quantum simulation with ultracold molecules in optical lattices, G913291176, G963926086
OpenAlex ID: W7213581378