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arXiv · 2308.08891

Multimode ion-photon entanglement over 101 kilometers of optical fiber

V. Krutyanskiy·M. Canteri·M. Meraner·V. Krcmarsky·B. P. Lanyon
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Abstract

A three-qubit quantum network node based on trapped atomic ions is presented. The ability to establish entanglement between each of the qubits in the node and a separate photon that has travelled over a 101km-long optical fiber is demonstrated. By sending those photons through the fiber in close succession, a remote entanglement rate is achieved that is greater than when using only a single qubit in the node. Once extended to more qubits, this multimode approach can be a useful technique to boost entanglement distribution rates in future long-distance quantum networks of light and matter.

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V. Krutyanskiy, M. Canteri, M. Meraner, V. Krcmarsky, B. P. Lanyon. 2023-08-17. Multimode ion-photon entanglement over 101 kilometers of optical fiber. https://arxiv.org/abs/2308.08891

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