Marius Neumann, M. Sc.

As part of the ATIQ project for the development of an ion trap quantum computer, various semiconductor components are measured at cryogenic temperatures at the emg. One of these components is an integrated shuttling controller, which controls the ion position in the quantum computer. The aim of this work is to develop a circuit board that provides the necessary control signals for this chip.

Prior knowledge: board design
Keywords: quantum computer, semiconductor components, board design, cryogenic applications

As part of the ATIQ project for the development of an ion trap quantum computer, various semiconductor components are measured at cryogenic temperatures at the emg. One of these components is an integrated shuttling controller, which controls the ion position in the quantum computer. In this work, software is to be developed with which this chip can be tested efficiently.

Prior knowledge: Python

Keywords: quantum computers, semiconductor devices, software, cryogenic applications

As part of the ATIQ project for the development of an ion trap quantum computer, various semiconductor components are measured at cryogenic temperatures at the emg. In this work, an amplifier circuit is to be designed which can be placed between the component and the measuring device in order to amplify the output signal of the semiconductor components.

Prior knowledge: Board design

Keywords: quantum computers, semiconductor devices, platinum design, cryogenic applications

2025

High-Tc Josephson Junction Arrays Fabricated by He-FIB
Max Pröpper, Dominik Hanisch, Christoph Schmid, Marius Neumann, Paul Julius Ritter, Marc-André Tucholke, Edward Goldobin, Dieter Koelle, Reinhold Kleiner, Meinhard Schilling, Benedikt Hampel
in IEEE Transactions on Applied Superconductivity, vol. 35, no. 5, pp. 1-5, Aug. 2025, Art no. 1100105
doi: 10.1109/TASC.2024.3516741

2024

A Low-Power Cryogenic Analog Electrode Signal Processing Unit for Shuttling Operations in a Trapped-Ion Quantum Computer
Alexander Meyer, Zhaoqun Guo, Marius Neumann, Paul Julius Ritter, Jens Repp, Matthias Brandl, Meinhard Schilling, Vadim Issakov
2024 IEEE European Solid-State Electronics Research Conference (ESSERC), Bruges, Belgium, 2024, pp. 484-487
doi: 10.1109/ESSERC62670.2024.10719432

A Low-Power, High-Swing LDMOS Driver Amplifier for Shuttling Controller in a Trapped-Ion Quantum Computer Operating at 4 K
Zhaoqun Guo, Alexander Meyer, Adilet Dossanov, Paul Julius Ritter, Marius Neumann, Jens Repp, Matthias Brandl, Meinhard Schilling, Vadim Issakov
2024 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS), Fort Lauderdale, FL, USA, 2024, pp. 54-57
doi: 10.1109/BCICTS59662.2024.10745686

Model Verification Of U-shaped Antenna Designs For THz Imaging Using Josephson Junctions
Paul Julius Ritter, Marius Neumann, Max Pröpper, Dominik Hanisch, Finn-Niclas Stapelfeldt, Julius Mumme, Meinhard Schilling, Benedikt Hampel
2024 49th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Perth, Australia, 2024, pp. 1-2
doi: 10.1109/IRMMW-THz60956.2024.10697863

THz Properties of He-FIB YBa₂Cu₃O_7-x Josephson Junctions
Max Pröpper, Dominik Hanisch, Chistoph Schmid, Paul Julius Ritter, Marius Neumann, Edward Goldobin, Dieter Koelle, Reinhold Kleiner, Meinhard Schilling, Benedikt Hampel
in IEEE Transactions on Applied Superconductivity, vol. 34, no. 3, pp. 1-5, May 2024, Art no. 1100505
doi: 10.1109/TASC.2024.335314

2023

Design and Characterization of a Hairpin Filter at GHz Frequencies Using a THz Microscope for Near-Field Analysis
Paul Julius Ritter, Marius Neumann, Julius Mumme, Meinhard Schilling, Benedikt Hampel
48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Montreal, QC, Canada, 2023, pp. 1-2
doi: 10.1109/IRMMW-THz57677.2023.10299026

Near-field Characterization of a GHz Branchline Coupler Using a THz Microscope
Marius Neumann, Paul Julius Ritter,  Julius Mumme, Meinhard Schilling, Benedikt Hampel
48th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), Montreal, QC, Canada, 2023, pp. 1-2
doi: 10.1109/IRMMW-THz57677.2023.10299243