Freiburg 2024 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 23: Poster I

Q 23.41: Poster

Dienstag, 12. März 2024, 17:00–19:00, Tent B

Fabrication of a surface-electrode ion trap for quantum information processing — •Nora D. Stahr^1,3, Jacob Stupp^1,3, Eike Iseke², Nila Krishnakumar², Friederike Giebel², Konstantin Thronberens², Chloë Allen-Ede^1,3, Amado Bautista-Salvador², and Christian Ospelkaus^1,2,3 — ¹Leibniz Universität Hannover, Germany — ²Physikalisch-Technische Bundesanstalt, Braunschweig, Germany — ³Laboratory of Nano and Quantum-Engineering, Hannover, Germany

Surface-electrode ion traps are a promising platform for the realisation of quantum computers, as the underlying microfabrication techniques are scalable [1]. The MIQRO project is developing surface-electrode ion traps for scalable quantum computers that utilise microwave fields and static magnetic fields for quantum logic gates [2]. For future applications, the number of integrated electrodes needs to be increased and additional functional units are required to be integrated into the ion trap substrates to enable better connectivity and optimised optical access. In addition, the assembly and connection technology needs to be adapted to the increasing requirements. We present microfabrication techniques for the production of multi-layer quantum processor chips [3] with the aim of implementing different technologies in one process flow.

[1] S. Seidelin et al., Physical Review Letters 96, 253003 (2006). [2] F. Mintert, & C. Wunderlich, Physical Review Letters 87, 257904 (2001). [3] A. Bautista-Salvador et al., New Journal of Physics 21, 043011 (2019).

Keywords: Surface-electrode ion trap; Quantum information processing; Selective laser-induced etching; Through substrate vias