Quantum 2025 – scientific programme
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THU: Thursday Contributed Sessions
THU 13: Poster Session: Applications
THU 13.52: Poster
Thursday, September 11, 2025, 16:30–18:30, ZHG Foyer 1. OG
Combining Ion shuttling and individual Ion addressing in a segmented linear Trap — •Robin Strohmaier, Daniel Wessel, Janis Wagner, Paula Bañuls, Benjamin Zenz, Janine Hilder, Björn Lekitsch, Jonas Vogel, Ulrich Poschinger, and Ferdinand Schmidt-Kaler — Johannes-Gutenberg Universität Mainz
Quantum information platforms have seen significant progress in recent years, with trapped ions emerging as a promising candidate due to their high gate fidelities for laser-driven operations. Here, we present our latest results from a trapped 40Ca+ experiment utilizing medium-sized ion crystals trapped in a segmented linear Paul trap. Our trap features 40 segments enabling reliable ion shuttling and a versatile reconfiguration of ion crystals, transport of single ions and crystals, split and merge and ion swap. Additionally, our setup has a single-ion addressing unit based on two crossed acousto-optical deflectors, where we encode qubits on the two Zeeman states of the S1/2 ground state. We have demonstrated site-selective operations in linear ion chains, with a low crosstalk of less than 10−4 using laser-driven gates via a stimulated Raman process at 400 nm. Now, we combine qubit register configuration operations with single-ion addressing. We demonstrate arbitrary, individual single-qubit gate operations on ions in separate crystals and that entanglement between two ions in a crystal is preserved through the shuttling process. These results mark a step toward reconfigurable architectures for quantum computing eventually with 50 to 100 trapped ions.
Keywords: Trapped Ions; Single Ion addressing; Ion Shuttling; Quantum Computing