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Q: Fachverband Quantenoptik und Photonik
Q 66: Poster – Quantum Technologies III
Q 66.6: Poster
Thursday, March 5, 2026, 17:00–19:00, Philo 2. OG
Adhesion Tests for Multi-Layer Surface-Electrode Ion Traps in Cryogenic Ultra-High Vacuum — •Nica Schiffelholz1, Jacob Stupp1, Nora D. Stahr1, Masum M. Billah1, Marlon Kuhn1, Christine Marachoris1, Friederike Giebel2, Eike Iseke1,2, Nila Krishnakumar1,2, Konstantin Thronberens2, and Christian Ospelkaus1,2 — 1Institute for Quantum Optics, Leibniz University Hannover, Welfengarten 1, Hannover, 30167, Germany — 2Physikalisch-Technische Bundesanstalt, Bundesallee 100, Braunschweig, 38116, Germany
Quantum computers are expected to solve certain computational problems significantly faster than classical computers. Trapped-ion based approaches offer the advantage of scalability and low error rates. Trapping ions in surface-electrode ion traps offers improved optical access, while multi-layered designs allow more complex signal routing in multifunctional trap designs. In our design, subsequent gold layers are microfabricated with a dieletric polyimide film between each level. Here we investigate the adhesive behavior between the polyimide layer and the subsequent layers for use in cryogenic ultra-high vacuum under varying manufacturing parameters. Titanium and chromium are tested as adhesive layers, and their effect on the gold layer is studied.
Keywords: quantum computing; surface-electrode ion trap; microfabrication; metal on polyimide adhesion