Fabrication of an atom chip for Rydberg atom-metal surface interaction studies
arXiv:2510.11902
Abstract
An atom chip has been fabricated for the study of interactions between Rb Rydberg atoms and a Au surface. The chip tightly confines cold atoms by generating high magnetic field gradients using microfabricated current-carrying wires. These trapped atoms may be excited to Rydberg states at well-defined atom-surface distances. For the purpose of Rydberg atom-surface interaction studies, the chip has a thermally evaporated Au surface layer, separated from the underlying trapping wires by a planarizing polyimide dielectric. Special attention was paid to the edge roughness of the trapping wires, the planarization of the polyimide, and the grain structure of the Au surface.
This is a manuscript prepared approximately 13 years ago, intended to be combined with experimental demonstration of the chip to trap atoms. The first author passed away in September 2024. The fabrication techniques may be useful to others
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