Mainz 2026 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 19: Quantum Technologies – Ion Traps
Q 19.5: Vortrag
Dienstag, 3. März 2026, 12:00–12:15, P 5
Characterization of Inner Control Electrode Shapes for Multi-Layer Surface-Electrode Ion Traps — •Florian Ungerechts1, Rodrigo Munoz1, Janina Bätge1, Masum Billah1, Giorgio Zarantonello1,2, and Christian Ospelkaus1,3 — 1Institut für Quantenoptik, Leibniz Universität Hannover — 2QUDORA Technologies GmbH — 3Physikalisch-Technische Bundesanstalt
Trapped ions are a leading platform for quantum information processing. Scalable architectures, such as the Quantum Charged Coupled Device (QCCD) architecture, enable all-to-all connectivity between atomic ion qubits in dedicated registers and can be implemented on microfabricated surface-electrode traps. The development of novel fabrication techniques over the past years has transformed the design of surface-electrode ion traps into increasingly complex multi-layer structures. Yet, the control electrodes remain mostly unchanged. For three-dimensional traps and single-layer surface traps, the control electrodes are rectangular due to geometrical constraints. However, this does not imply that it is the ideal shape for control electrodes in modern multi-layer surface traps. Thus, we compare various shapes for inner control electrodes and evaluate their performance in terms of ion shuttling and radial shim compensation.
Keywords: quantum information processing; quantum computing; trapped ions; QCCD architecture; surface-electrode ion traps