Mainz 2026 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 66: Poster – Quantum Technologies III

Q 66.21: Poster

Thursday, March 5, 2026, 17:00–19:00, Philo 2. OG

An Interface Concept for Ion Quantum Computers: Fiber-Based Cavities for Enhanced Optical Connection — •Luca Graf, Lasse Irrgang, Catherine Matthies, Hannah Koeth, Tuncay Ulas, and Ralf Riedinger — Zentrum für optische Quantentechnologien, Universität Hamburg, 22761 Hamburg, Germany

The development of quantum computers promises to solve computational complex problems in the future that cannot be solved with classical computers. Just as in conventional computing clusters, quantum computers must also be networked in a scalable way. We present an innovative concept for an interface that has been specially developed for ion quantum computers. This approach uses special coated fiber-based cavities to establish an efficient optical connection between ion traps. Furthermore, this approach can be used to couple optical qubits, such as entangled photons, with ions in the trap. For our experiments, we will utilize barium ions as qubits and ytterbium ions as sympathetically cooled reference ions.

Keywords: Ion Trap; Distributed Quantum Computing; Ion Phototn Interface; Fiber Cavitiy