Bonn 2025 – scientific programme

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QI: Fachverband Quanteninformation

QI 4: Quantum Networks, Repeaters, and QKD I (joint session Q/QI)

QI 4.2: Talk

Monday, March 10, 2025, 11:30–11:45, AP-HS

Quantum network nodes based on neutral atoms in an optical cavity — •Sebastián Alejandro Morales Ramírez, Raphael Benz, 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 is an outstanding challenge that is pursued in several different hardware platforms. Single neutral atoms trapped at the centre of an optical cavity are a promising platform, where many of the required capabilities to build a quantum network were demonstrated. The ability to position and individually control an array of atoms with optical tweezers is a key ingredient for the implementation of multi-qubit quantum network nodes. We will outline the plans of our research group to realize such a setup. Employing the system, a series of experiments is envisioned. We will outline these experiments comprising photon-mediated quantum information processing between the intra-cavity atoms, the generation of photonic cluster states, and the generation of optical Gottesman-Kitaev-Preskill qubits.

Keywords: Quantum network nodes; Quantum communications; Trapped neutral atoms; Optical tweezers; Quantum gates