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Quantum 2025 – wissenschaftliches Programm

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MON: Monday Contributed Sessions

MON 6: QIP Implementations: Trapped Ions

MON 6.3: Vortrag

Montag, 8. September 2025, 14:45–15:00, ZHG007

Framework for optimization of Paul trap design and control voltages for X-junction shuttling — •Andreas Conta, Ulrich Poschinger, and Ferdinand Schmidt-Kaler — Institut für Physik, Johannes Gutenberg-Universität Mainz

Trapped-ion quantum computing is a promising architecture for large-scale quantum computing. We aim to scale up the shuttling-based [1] approach. This requires complex multi-segmented traps that include junctions [2]. We present our work of a framework for optimization of trap designs and control voltages waveforms, with the goal of shuttling a linear crystals an X-junction. Commercially available tools are used to create parameterised models of traps and potentials of the electrodes [3]. Our custom Segmented Ion Trap CONtrol System (SITCONS) then performs a multipole expansion, thereby enabling the calculation of control voltages using quadratic programming. We analyse the influence of different trap designs and electrode shapes on the shuttling through an X-junction.

[1] Ruster et al., Phys. Rev. A 90, 033410 (2014)

[2] Delaney et al., Phys. Rev. X 14, 041028 (2024)

[3] Nullspace Inc., Nullspace ES [software], https://www.nullspaceinc.com/

Keywords: Paul traps; X-junction; junction shuttling; trap design optimization

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