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Experiments generate quantum entanglement over optical fibres across three real cities, marking progress towards networks that could have revolutionary applications.
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- Davide Castelvecchi
- Davide Castelvecchi
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Three separate research groups have demonstrated quantum entanglement — in which two or more objects are linked so that they contain the same information even if they are far apart — over several kilometres of existing optical fibres in real urban areas. The feat is a key step towards a future quantum internet, a network that could allow information to be exchanged while encoded in quantum states.
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Nature 629, 734-735 (2024)
doi: https://doi.org/10.1038/d41586-024-01445-2
References
Knaut, C. M. et al. Nature 629, 573–578 (2024).
Liu, J. L. et al. Nature 629, 579–585 (2024).
Stolk, A. J. et al. Preprint at arXiv https://doi.org/10.48550/arXiv.2404.03723 (2024).
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