The development of efficient network nodes is a key element for the realisation of quantum networks which promise great capabilities as distributed quantum computing or provable secure communication. We report the realisation of a quantum network node using a trapped ion inside a fiber-based Fabry-Perot cavity. We show the generation of deterministic entanglement at a high fidelity of 91.2(2)\,\% between a trapped Yb--ion and a photon emitted into the resonator mode. We achieve a success probability for generation and detection of entanglement for a single shot of 2.5⋅10−3 resulting in 62\,Hz entanglement rate.
@article{arxiv.2005.09124,
title = {Deterministic spin-photon entanglement from a trapped ion in a fiber Fabry-Perot cavity},
author = {Pascal Kobel and Moritz Breyer and Michael Köhl},
journal= {arXiv preprint arXiv:2005.09124},
year = {2020}
}