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Q: Fachverband Quantenoptik und Photonik
Q 66: Poster – Quantum Technologies III
Q 66.1: Poster
Donnerstag, 5. März 2026, 17:00–19:00, Philo 2. OG
SLE-structuring and surface polishing for the fabrication of multi-segmented ion traps — •Jan Christoph Müller1, Can Leichtweiss1, Alexander Müller2, Björn Lekitsch1, 2, and Ferdinand Schmidt-Kaler1, 2 — 1QUANTUM,Institut für Physik, 55128 Mainz, Germany — 2neQxt GmbH
The up-scaling of trapped ion quantum computers relies on the segmentation and miniaturization of the traditional macroscopic ion traps to enable the storage of multiple sub clusters of the ions that serve as qubits [1]. We want to achieve this while maintaining favorable qualities like a deep trapping potential and low heating rates at room temperature, both associated with 3D Paul traps. We established a special purpose clean room where we can fabricate trap chips with versatile 3D-geometries in fused silica using Selective Laser-induced Etching (SLE), followed by surface polishing using a scanning CO2-Laser [2] and metallic sputter deposition. We report on different fabricated trap designs and on tests with 40Ca+ ions.
[1] V. Kaushal et al., AVS Quantum Sci.; 2 (1):014101.
[2] C. Weingarten et al., J. Laser Appl.; 29 (1):011702.
Keywords: Segmented Paul Trap; Selective Laser-induced Etching; CO2-Laser Polishing; Quantum Computing