Erlangen 2022 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 23: Quantum Information I

Q 23.14: Poster

Tuesday, March 15, 2022, 16:30–18:30, P

Ion Trap Development for Quantum Computing Applications — •Alexander Müller, Björn Lekitsch, Daniel Wessel, Robin Strohmaier, Ulrich Poschinger, and Ferdinand Schmidt-Kaler — JGU Mainz, Institute for Physics, Staudingerweg 7, 55128 Mainz, Germany

Trapped ion quantum computers are one of the leading contenders for the implementation of useful quantum algorithms. Ion traps for such systems have to meet many requirements like precise alignment of individual structures and layers, good optical access and sufficient thermal conductivity, just to name a few. But most importantly, these traps have to be fabricated in a reliable and repeatable way.

We present the fabrication of a two-layer segmented linear ion trap based on 4-inch fused silica wafers. The fabrication steps include 3D structuring using selective laser-induced etching, PVD gold-coating, electroplating, wafer dicing and µm-precision die bonding. The mounting of the ion trap will enable quick turnaround of traps and the use in different setups.

We will show a suitable setup in more detail. This experimental apparatus will include a titanium vacuum vessel intended for XHV pressures, a high-performance mu-metal shielding to suppress external magnetic fields, high NA opitcs for individual addressing of qubits in a string of 10 ions, and laser systems and compact optical components for dual species operation.