Mainz 2026 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
Q: Fachverband Quantenoptik und Photonik
Q 67: Poster – Quantum Information
Q 67.7: Poster
Donnerstag, 5. März 2026, 17:00–19:00, Philo 2. OG
Impact of electrode noise on qubit quality metrics in a 2D segmented ion trap — •Daniel Busch1, Benjamin Bürger1, Kais Rejaibi1, Ivan Boldin1, 2, Patrick Huber1, Dorna Niroomand1, and Christof Wunderlich1 — 1Universität Siegen, Walter-Flex-Straße 3, 57072 Siegen — 2Present address: eleQtron GmbH, Heeserstraße 5, 57072 Siegen
Important requirements for the realisation of robust quantum computing are long qubit coherence times as well as high gate fidelities both of which suffer from uncontrolled parameter fluctuations (noise). Thus, eliminating and mitigating noise constitutes one of the major challenges to scalability. In the case of trapped-ion quantum computing, ion traps with segmented electrodes are one approach to scale up the number of qubits. However, electric field fluctuations at these DC electrodes lead to a further source of noise. We are currently setting up a cryogenic quantum demonstrator that will include a cryogenic digital-to-analog converter (DAC) combined with a switching matrix to tackle this issue.
To evaluate the strategy of using optical switches, we have installed proof-of-principle optical switches in a room temperature experiment using the first two copies of a micro-structured 2D segmented ion trap with built-in micromagnets. We show results of measurements of coherence time and gate fidelities, and discuss the effects of remaining electric noise at the electrodes.
Keywords: Coherence Times; DC electrodes; Gates; Noise; Switches