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DC Field | Value | Language |
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dc.contributor.author | Wengerowsky, Soren | - |
dc.contributor.author | Koduru Joshia, Siddarth | - |
dc.contributor.author | Steinlechnera, Fabian | - |
dc.contributor.author | Zichig, Julien R. | - |
dc.contributor.author | Dobrovolskiyh, Sergiy M. | - |
dc.contributor.author | Van der Molen, Rene | - |
dc.contributor.author | Losh, Johannes W. N. | - |
dc.contributor.author | Zwillerg, Val | - |
dc.contributor.author | Versteeghg, Marijn A. M. | - |
dc.contributor.author | Murai, Alberto | - |
dc.contributor.author | Calonicoi, Davide | - |
dc.contributor.author | Inguscioj, Massimo | - |
dc.contributor.author | Hubel, Hannes | - |
dc.contributor.author | Boa, Liu | - |
dc.contributor.author | Scheidla, Thomas | - |
dc.contributor.author | Zeilingera, Anton | - |
dc.contributor.author | Xuereb, Andre | - |
dc.contributor.author | Ursin, Rupert | - |
dc.date.accessioned | 2022-05-17T04:56:14Z | - |
dc.date.available | 2022-05-17T04:56:14Z | - |
dc.date.issued | 2019-03 | - |
dc.identifier.citation | Wengerowsky, S., Joshi, S. K., Steinlechner, F., Zichi, J. R., Dobrovolskiy, S. M., van der Molen, R., ... & Ursin, R. (2019). Entanglement distribution over a 96-km-long submarine optical fiber. Proceedings of the National Academy of Sciences, 116(14), 6684-6688. | en_GB |
dc.identifier.uri | https://www.um.edu.mt/library/oar/handle/123456789/95792 | - |
dc.description.abstract | Quantum entanglement is one of the most extraordinary effects in quantum physics, with many applications in the emerging field of quantum information science. In particular, it provides the foundation for quantum key distribution (QKD), which promises a conceptual leap in information security. Entanglement-based QKD holds great promise for future applications owing to the possibility of device-independent security and the potential of establishing global-scale quantum repeater networks. While other approaches to QKD have already reached the level of maturity required for operation in absence of typical laboratory infrastructure, comparable field demonstrations of entanglement-based QKD have not been performed so far. Here, we report on the successful distribution of polarization-entangled photon pairs between Malta and Sicily over 96 km of submarine optical telecommunications fiber. We observe around 257 photon pairs per second, with a polarization visibility above 90%. Our results show that QKD based on polarization entanglement is now indeed viable in long-distance fiber links. This field demonstration marks the longest-distance distribution of entanglement in a deployed telecommunications network and demonstrates an international submarine quantum communication channel. This opens up myriad possibilities for future experiments and technological applications using existing infrastructure. | en_GB |
dc.language.iso | en | en_GB |
dc.publisher | National Academy of Sciences | en_GB |
dc.rights | info:eu-repo/semantics/openAccess | en_GB |
dc.subject | Quantum entanglement | en_GB |
dc.subject | Photons -- Polarization | en_GB |
dc.subject | Telecommunication systems | en_GB |
dc.subject | Cables, Submarine | en_GB |
dc.subject | Fiber optics | en_GB |
dc.subject | Optical fibers | en_GB |
dc.title | Entanglement distribution over a 96-km-long submarine optical fiber | en_GB |
dc.type | article | en_GB |
dc.rights.holder | The copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder. | en_GB |
dc.description.reviewed | peer-reviewed | en_GB |
dc.identifier.doi | 10.1073/pnas.1818752116 | - |
dc.publication.title | Proceedings of the National Academy of Sciences | en_GB |
Appears in Collections: | Scholarly Works - FacSciPhy |
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File | Description | Size | Format | |
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Entanglement_distribution_over_a_96-km-long_submarine_optical_fiber(2019).pdf | 920.73 kB | Adobe PDF | View/Open |
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