Project Objective

In the ATIQ project, 25 partners, coordinated by Leibniz University Hannover, are developing reliable and user-friendly ion-trap quantum computers for applications in quantum chemistry and for optimization problems. One of the consortium’s three key technological challenges is the development of reliable cryogenic electronics integrated into the trap.

Our Task

This is precisely where the University of Siegen comes in: A new cryogenic demonstrator is being developed at the Chair of Experimental Quantum Optics. At its heart is control electronics designed in collaboration with Infineon and the Technical University of Braunschweig and manufactured by Infineon. It generates the signals needed to control the ion trap directly next to the trap at low temperatures, rather than transmitting them via long cables from room temperature. We expect this to result in significantly less electrical noise: thermal noise decreases with temperature, and short signal paths pick up hardly any interference. This should lower the heating rates of the ions and make quantum gates more precise. At the same time, electronics located close to the trap reduce the number of wires in the cryostats, thereby creating the conditions necessary for traps with many electrodes and qubits.

The research project is supported by various funding agencies and carried out in collaboration with a range of partners. This close collaboration facilitates regular professional exchange and supports the project throughout all phases—from planning and implementation to the final evaluation of the results.