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Integration of QKD in WDM networks

2021 International Conference on Optical Network Design and Modeling (ONDM), 2021
The theme of the integration of Quantum Key Distribution (QKD) in existing WDM optical networks will be discussed. Some evaluations about a reduced-cost implementation of BB84 protocol for QKD will be presented, where a QKD channel in O band is added to classical C-band WDM channels in the same fiber.
Martelli, P, Gatto, A, Brunero, M, Bodanapu, D, Rapisarda, M, Comi, PM, Martinelli, M   +6 more
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Deployed QKD Networks in Europe

2023 Optical Fiber Communications Conference and Exhibition (OFC), 2023
We report several use-case demonstrations for quantum key distribution in deployed fiber networks. The tests were carried out under real world conditions at the end-user premises using commercial QKD systems.
Hübel, Hannes, Kutschera, Florian, Pacher, Christoph, Achleitner, Martin, Strasser, Werner, Vedovato, Francesco, Rossi, Edoardo, Picciariello, Francesco, Vallone, Giuseppe, Villoresi, Paolo, Calderaro, Luca, Martín, Vicente, Brito, Juan Pedro, Ortíz, Laura, Lopez, Diego, Pastor-Perales, Antonio, Geitz, Marc, Braun, Ralf-Peter, Rydlichowski, Piotr   +18 more
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Information reconciliation for QKD

Quantum Information and Computation, 2011
Quantum key distribution (QKD) relies on quantum and classical procedures in order to achieve the growing of a secret random string ---the key--- known only to the two parties executing the protocol. Limited intrinsic efficiency of the protocol, imperfect devices and eavesdropping produce errors and information leakage from which the set of measured ...
David Elkouss, Jesús Martínez-Mateo, Vicente Martín   +2 more
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Joint QKD-Post-Quantum Cryptosystems

IEEE Access, 2020
To extend the transmission distance and/or improve secret-key rate of QKD protocols, we propose to employ the joint QKD-post-quantum cryptosystems in which QKD is used for raw-key transmission while the post-quantum cryptography (PQC) subsystem to ...
Ivan B Djordjevic
exaly   +2 more sources

Relayed-QKD and switched-QKD networks performance comparison considering physical layer QKD limitations

Optical Fiber Communication Conference (OFC) 2024
We experimentally evaluate the SKR generation for unoptimized QKD pairs in switched QKD and compare the performance of the switched-QKD with relayed-QKD networks to reveal they perform better for short distances and at large networks.
Nikolaos Makris, Alkinoos Papageorgopoulos, Persefoni Konteli, Iliana Tsoni, Konstantinos Tsimvrakidis, Ilias Papastamatiou, Kostas Christodoulopoulos, George T. Kanellos, Dimitris Syvridis   +8 more
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Network Architectures for QKD

2006 Digest of the LEOS Summer Topical Meetings, 2006
We present two schemes for QKD network architectures based on two ubiquitous topologies: the tree and the ring. Quantum key addressing schemes and their implications are also discussed.
B.A. Small, K. Bergman
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Implementations of QKD

2020
Chapter 12 provided a basic overview of the hardware components in a quantum key distribution (QKD) system. We also explored the Tokyo QKD Network built to test the threat resilience of QKD. In this chapter we'll delve into larger implementations of this technology, exploring the basics of a total of five major QKD networks.
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Quantifying the security of a QKD protocol

2015 IEEE International Conference on Advanced Networks and Telecommuncations Systems (ANTS), 2015
In this paper we develop the concept of quantifying the security of a quantum cryptographic scheme. We focus on BB84 and develop a model for measuring the security offered by protocols that follow a similar model. We also present a new model for entropy of detection assuming a binomial probability distribution.
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QKD BB84. A Taxonomy

2021 XLVII Latin American Computing Conference (CLEI), 2021
Mathias Zavala, Benjamín Barán
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Device-Independent QKD

2021
Device-Independent Quantum Key Distribution (DIQKD) deals with the problem that security proofs often only apply to the ideal setting of the theoretical protocol and do not take into account the problems that arise when implementing a protocol, such as the photon-number-splitting attack.
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