Bonn 2025 – scientific programme

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QI: Fachverband Quanteninformation

QI 37: Poster – Quantum Information Technologies (joint session Q/QI)

QI 37.5: Poster

Thursday, March 13, 2025, 17:00–19:00, Tent

Quantum Network Nodes with Cold Atoms in Optical Cavities — •Raphael Benz, Sebastián Alejandro Morales Ramírez, Micha Kappel, Vincent Beguin, Krishna Relekar, and Stephan Welte — 5. Physikalisches Institut, Center for Integrated Quantum Science and Technology and CZS Center QPhoton, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany.

The practical implementation of a quantum network remains an outstanding challenge pursued across various hardware platforms. Cold neutral atoms trapped in a high-finesse optical cavity have proven to be a promising platform due to the strong atom-light interaction and the controllability of the system. However, current implementations are limited to a few atoms in the cavity. The ability to position and individually control an array of atoms using optical tweezers opens the possibility of extending this platform to multi-qubit quantum network nodes. We present the plans of our group in Stuttgart to realize such a multi-qubit quantum network node. Several experiments are envisioned with this system, including photon-mediated quantum information processing between intra-cavity atoms, the generation of highly entangled photonic cluster states, and the creation of optical Gottesman-Kitaev-Preskill states.

Keywords: Quantum Network Nodes; Quantum Communication; Cavity-QED; Trapped Neutral Atoms; Optical Tweezers