Bonn 2025 – wissenschaftliches Programm
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QI: Fachverband Quanteninformation
QI 23: Quantum Technologies (Color Centers and Ion Traps) I (joint session Q/QI)
QI 23.3: Vortrag
Mittwoch, 12. März 2025, 15:15–15:30, HS Botanik
Integrated Cryo-Electronics for Scalable 2D Surface Ion Traps — •Fabian Anmasser1,2, Mohammad Abu Zahra3,4, Matthias Brandl3, Klemens Schueppert2, Jens Repp3, Matthias Dietl1,2, Yves Colombe2, Clemens Roessler2, Philipp Schindler1, and Rainer Blatt1,5 — 1Institute for Experimental Physics, Innsbruck, Austria — 2Infineon Technologies Austria AG, Villach, Austria — 3Infineon Technologies AG, Neubiberg, Germany — 4Technical University of Munich, Germany — 5Institute for Quantum Optics and Quantum Information, Innsbruck, Austria
2D surface ion traps provide a promising foundation for building scalable quantum computers. However, as the number of ions increases, so does the number of independently controllable electrodes, leading to a "wiring challenge". Current surface traps require individual routing of electrodes out of the cryogenic system, which becomes impractical for traps with over 1000 qubits.
We present a solution to the wiring challenge by integrating cryogenic electronics underneath a surface ion trap. Our approach involves a control chip that multiplexes 37 inputs to 199 DC electrodes, enabling control of a large number of electrodes with reduced connections. The surface trap is glued on top of the control chip, with electrical connections made using gold wire bonds. Initial Ca+ ion trapping trials have been conducted, and future steps include measuring heating rates and exploring advanced DC shuttling techniques. This work paves the way for scalable surface ion trap devices, bringing us closer to a practical quantum computer.
Keywords: quantum computing