Quantum Key Distribution with Efficient Post-Quantum Cryptography-Secured Trusted Node on a Quantum Network
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917974171975680 |
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| author | Piétri, Yoann Verdier, Pierre-Enguerrand Lacour, Baptiste Gautier, Maxime Huang, Heming Camus, Thomas Pegon, Jean-Sébastien Zuber, Martin Faugère, Jean-Charles Schiavon, Matteo Rhouni, Amine Jaouën, Yves Fabre, Nicolas Alléaume, Romain Rivera, Thomas Diamanti, Eleni |
| author_facet | Piétri, Yoann Verdier, Pierre-Enguerrand Lacour, Baptiste Gautier, Maxime Huang, Heming Camus, Thomas Pegon, Jean-Sébastien Zuber, Martin Faugère, Jean-Charles Schiavon, Matteo Rhouni, Amine Jaouën, Yves Fabre, Nicolas Alléaume, Romain Rivera, Thomas Diamanti, Eleni |
| contents | Quantum Key Distribution (QKD) enables two distant users to exchange a secret key with information-theoretic security, based on the fundamental laws of quantum physics. While it is arguably the most mature application of quantum cryptography, it has inherent limitations in the achievable distance and the scalability to large-scale infrastructures. While the applicability of QKD can be readily increased with the use of intermediary trusted nodes, this adds additional privacy requirements on third parties. In this work, we present an efficient scheme leveraging a trusted node with lower privacy requirements thanks to the use of post-quantum cryptographic techniques, and implement it on a deployed fiber optic quantum communication network in the Paris area. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_01454 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantum Key Distribution with Efficient Post-Quantum Cryptography-Secured Trusted Node on a Quantum Network Piétri, Yoann Verdier, Pierre-Enguerrand Lacour, Baptiste Gautier, Maxime Huang, Heming Camus, Thomas Pegon, Jean-Sébastien Zuber, Martin Faugère, Jean-Charles Schiavon, Matteo Rhouni, Amine Jaouën, Yves Fabre, Nicolas Alléaume, Romain Rivera, Thomas Diamanti, Eleni Quantum Physics Quantum Key Distribution (QKD) enables two distant users to exchange a secret key with information-theoretic security, based on the fundamental laws of quantum physics. While it is arguably the most mature application of quantum cryptography, it has inherent limitations in the achievable distance and the scalability to large-scale infrastructures. While the applicability of QKD can be readily increased with the use of intermediary trusted nodes, this adds additional privacy requirements on third parties. In this work, we present an efficient scheme leveraging a trusted node with lower privacy requirements thanks to the use of post-quantum cryptographic techniques, and implement it on a deployed fiber optic quantum communication network in the Paris area. |
| title | Quantum Key Distribution with Efficient Post-Quantum Cryptography-Secured Trusted Node on a Quantum Network |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2504.01454 |