Long-term analysis of efficient-BB84 4-node network with optical switches in metropolitan environment
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915563210539008 |
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| author | De Toni, Alberto Bortolozzo, Edoardo Emanuele, Alessandro Venturini, Marco Calderaro, Luca Avesani, Marco Vallone, Giuseppe Villoresi, Paolo |
| author_facet | De Toni, Alberto Bortolozzo, Edoardo Emanuele, Alessandro Venturini, Marco Calderaro, Luca Avesani, Marco Vallone, Giuseppe Villoresi, Paolo |
| contents | Quantum Key Distribution (QKD) is a leading technology for enabling information-theoretic secure communication, with protocols such as BB84 and its variants already deployed in practical field implementations. As QKD evolves from point-to-point links to multi-node networks, scalability and cost-effectiveness become central challenges. Among the approaches to address these issues, efficient-BB84 has shown durable and reliable performances, while optical switching techniques enable flexible, scalable, and cost-efficient integration of QKD into existing infrastructures. In this work, we present an active QKD network in a production environment, employing efficient-BB84 and optical switching, orchestrated in a coordinated manner, emphasizing their potential to support robust, future-proof quantum-secure communication systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2510_16867 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Long-term analysis of efficient-BB84 4-node network with optical switches in metropolitan environment De Toni, Alberto Bortolozzo, Edoardo Emanuele, Alessandro Venturini, Marco Calderaro, Luca Avesani, Marco Vallone, Giuseppe Villoresi, Paolo Quantum Physics Optics Quantum Key Distribution (QKD) is a leading technology for enabling information-theoretic secure communication, with protocols such as BB84 and its variants already deployed in practical field implementations. As QKD evolves from point-to-point links to multi-node networks, scalability and cost-effectiveness become central challenges. Among the approaches to address these issues, efficient-BB84 has shown durable and reliable performances, while optical switching techniques enable flexible, scalable, and cost-efficient integration of QKD into existing infrastructures. In this work, we present an active QKD network in a production environment, employing efficient-BB84 and optical switching, orchestrated in a coordinated manner, emphasizing their potential to support robust, future-proof quantum-secure communication systems. |
| title | Long-term analysis of efficient-BB84 4-node network with optical switches in metropolitan environment |
| topic | Quantum Physics Optics |
| url | https://arxiv.org/abs/2510.16867 |