Superconducting NbTi radiofrequency resonator for surface ion traps Marjan Schubert, David Fegelein, Dominik Hanisch, Max Pröpper, 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.2024.3350588
2022
Active impedance matching of a cryogenic radio frequency resonator for ion traps Marjan Schubert, Lukas Kilzer, Timko Dubielzig, Meinhard Schilling, Christian Ospelkaus, Benedikt Hampel Review of Scientific Instruments 93, 093201 - 2022 doi: 10.1063/5.0097583
A few years ago, the institute developed a system based on magnetic field sensors for measuring the speed of vehicles. The system was tested and further developed in collaboration with the PTB. Now the electronics used in the test setup are to be adapted to the special requirements of speed measurement. This includes the development of suitable electronics and data processing with a microcontroller.
Previous knowledge: Experience with microcontroller programming
Keywords: AMR sensors, microcontroller, speed measurement
Quantum computers differ from conventional computers in many ways. While conventional systems perform calculations based on the logic levels ‘0’ and ‘1’, quantum computers use quantum bits (qubits). Qubits can be generated from different quantum states. In the Quantum Valley Lower Saxony (QVLS) project, the spins of electrons of several trapped ions are used as quantum states. Due to their scalability, quantum computers based on ion traps are a promising approach for surpassing the performance of conventional computers (quantum superiority).
Electric fields generated by a resonator are used to trap the ions, which float at a height of 90 µm above the trap surface shown in the figure. The optimisation of the generation of the electric fields and the dynamic impedance matching is urgently required due to the close proximity to the information carriers. Promising components of a final thesis can be tested on a test setup of the quantum computer in Hanover. Tasks range from design and simulation of different coil geometries, circuit/board design and 3D printing.
Prior knowledge: Depending on the task
Keywords: quantum computer, ion traps, RF resonator
