SAMOP 2023 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 20: Poster II

A 20.32: Poster

Mittwoch, 8. März 2023, 16:30–19:00, Empore Lichthof

VAUQSI: Second Generation Superconducting Radio-Frequency Trap for Highly Charged Ion Qubits — •Stepan Kokh, Elwin A. Dijck, Christian Warnecke, Claudia Volk, Alvaro Garmendia, Julia Eff, Andrea Graf, José R. Crespo López-Urrutia, and Thomas Pfeifer — Max-Planck-Institut für Kernphysik, Heidelberg

Quantum computing is a rapidly developing field with the potential to revolutionize science and information technology by enabling previously intractable calculations. Qubits based on laser-cooled ions in Paul traps form one of the most promising implementations of a quantum computer. Using highly charged ions trapped and sympathetically cooled inside a Be⁺ Coulomb crystal, the sensitivity to external noise, which generally limits coherent operations, could be reduced. Working towards the first quantum computer based on highly charged ion qubits, we are constructing a new cryogenic, superconducting Paul trap VAUQSI (Viel-Frequenz-Ansteuerung Ultrastabiler Qubits in Supraleitenden Ionenfallen). The trap further develops our existing design, which integrates a linear Paul trap with a superconducting radio-frequency resonator. The storage and interrogation of ions is improved through better thermalization, which increases the resonator quality factor, and the addition of further electrodes, which allows finer control of the trapping potential in multi-qubit operation. A redesign of the electrodes improves the recapture of injected highly charged ions. We will present the technical implementation of the trap and its improvement regarding our current trap.