Mainz 2026 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 67: Poster – Quantum Information
Q 67.9: Poster
Thursday, March 5, 2026, 17:00–19:00, Philo 2. OG
Raman addressing system for light-shift gates on Qudits in trapped ion quantum computer — •Raphael Poloczek, Tim Gollerthan, Manuel John, Peter Tirler, Michael Meth, Keshav Pareek, Lukas Gerster, Lisa Parigger, Timo Spalek, and Martin Ringbauer — Institut für Experimentalphysik, Universität Innsbruck, Austria
Qudits, the generalization of qubits to d-level quantum systems, offer a powerful extension of conventional two-level quantum computing. Trapped ions represent a platform for realizing such systems, as their intrinsic multilevel structure naturally supports qudit encoding, providing access to higher-dimensional Hilbert spaces and enabling enriched computational capabilities. Fully exploiting qudit-based architectures requires the realization of efficient quantum gates for qudits. A recently demonstrated light-shift gate mechanism constitutes such an operation, creating genuine entanglement between two qudits, while matching the system’s local dimension [1].
We are developing an experimental setup to implement this entangling gate on a quantum computer using trapped 40Ca+ ions as information carriers. The setup is designed to address single ions using a pair of counterpropagating Raman beams, which generate the state dependent dipole force required to operate this gate.
[1] P. Hrmo et al., Nat Commun 14, 2242 (2023)
Keywords: Quantum Computing; Trapped Ions; Qudits