Year: 2025
Type: article
Abstract: In the Hall effect, a voltage drop develops perpendicularly to the current flow in the presence of a magnetic field, leading to a transverse Hall resistance. Recent developments with quantum simulators have unveiled strongly correlated and universal manifestations of the Hall effect. However, a direct measurement of the Hall voltage and of the Hall resistance in a non-electronic system of strongly interacting fermions was not achieved to date. Here, we demonstrate a technique for measuring the Hall voltage in a neutral-atom-based quantum simulator. From that we provide the first direct measurement of the Hall resistance in a cold-atom analogue of a solid-state Hall bar and study its dependence on the carrier density, along with theoretical analyses. Our work closes a major gap between analogue quantum simulations and measurements performed in solid-state systems, providing a key tool for the exploration of the Hall effect in highly tunable and strongly correlated systems. The authors report an experimental study of the Hall effect measuring electrical quantities in ultracold fermionic quantum simulators. This provides a way forward in measuring transport properties in these platforms and verifying long-standing theoretical predictions.
Source: Nature Communications
Authors: T.-W. Zhou, T. Beller, G. Masini, J. Parravicini, G. Cappellini, C. Repellin, T. Giamarchi, J. Catani, M. Filippone, L. Fallani
Institutions: University of Florence, European Laboratory for Non-Linear Spectroscopy, National Institute of Optics, National Research Council, Centre National de la Recherche Scientifique, Laboratoire de Physique et Modélisation des Milieux Condensés, Université Grenoble Alpes, University of Geneva, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Grenoble, Institut de Recherche Interdisciplinaire de Grenoble
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $6,990
Awards: G1190173965, Programmable Atomic Large-scale Quantum Simulation 2 - SGA1, Etude de la pile quantique : Algorithmes, modèles de calcul et simulation pour l’informatique quantique, G25211845, G3022749744, G3205481132, Low dimensional quantum fluids, G3514304032, G3602658959, G3976037732, G4856404060, Non-abelian Fractional Chern Insulators of ultracold atoms, G526456201, G5443090575, G5599649393, G5987792135, G628552264, G777498305, G8959349008
OpenAlex ID: W4404569079