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O: Fachverband Oberflächenphysik

O 93: Electronic structure of surfaces: Spectroscopy, surface states III

O 93.10: Vortrag

Freitag, 13. März 2026, 11:45–12:00, HSZ/0201

Shaping Surface States: The Art of Designing Quantum Corrals — •Nadine Egger, Simon B. Hollweger, and Oliver T. Hofmann — Institute of Solid State Physics, TU Graz, Austria

Quantum corrals enable precise control over electron behavior on surfaces and can be designed to carry out tasks such as atomic-scale logic operations. However, determining the optimal corral shape and the precise placement of the individual building blocks is a nontrivial task. To address this, we introduce a simulation-based framework that automatically designs corral geometries to achieve specific functionalities. The approach combines surface-state electron simulations with an optimization algorithm that identifies not only the number of atomic building blocks required but also their optimal arrangement on the surface. As a first application, the framework is applied to design corrals capable of performing basic logic operations, such as AND or NOT gates. Beyond these examples, this method offers a versatile path toward creating atomically precise nanostructures with customized functional properties, paving the way for future developments in quantum device engineering.

Keywords: Quantum Corral; Scattering; Green's Functions; Quantum Computing; Optimization