Entangling single atoms over 33 km telecom fibre
| Autor: | van Leent, Tim, Bock, Matthias, Fertig, Florian, Garthoff, Robert, Eppelt, Sebastian, Zhou, Yiru, Malik, Pooja, Seubert, Matthias, Bauer, Tobias, Rosenfeld, Wenjamin, Zhang, Wei, Becher, Christoph, Weinfurter, Harald |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Nature 609, 69 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1038/s41586-022-04764-4 |
| Popis: | Heralded entanglement between distant quantum memories is the key resource for quantum networks. Based on quantum repeater protocols, these networks will facilitate efficient large-scale quantum communication and distributed quantum computing. However, despite vast efforts, long-distance fibre based network links have not been realized yet. Here we present results demonstrating heralded entanglement between two independent, remote single-atom quantum memories generated over fibre links with a total length up to 33 km. To overcome the attenuation losses in the long optical fibres of photons initially emitted by the Rubidium quantum memories, we employ polarization-preserving quantum frequency conversion to the low loss telecom band. The presented work represents a milestone towards the realization of efficient quantum network links. Comment: 6 pages and 4 figures + 5 pages and 4 figures |
| Databáze: | arXiv |
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