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Secure quantum key distribution [PDF]
Nature Photonics, 2014 Secure communication plays a crucial role in the Internet Age. Quantum mechanics may revolutionise cryptography as we know it today. In this Review Article, we introduce the motivation and the current state of the art of research in quantum cryptography.
Kiyoshi Tamaki +2 more
openaire +3 more sources
Layered quantum key distribution [PDF]
Physical Review A, 2018 We introduce a family of QKD protocols for distributing shared random keys within a network of $n$ users. The advantage of these protocols is that any possible key structure needed within the network, including broadcast keys shared among subsets of users, can be implemented by using a particular multi-partite high-dimensional quantum state.
Mehul Malik +4 more
openaire +5 more sources
Advances in device-independent quantum key distribution [PDF]
npj Quantum Information, 2022 Device-independent quantum key distribution (DI-QKD) provides the gold standard for secure key exchange. Not only does it allow for information-theoretic security based on quantum mechanics, but it also relaxes the need to physically model the devices ...
Víctor Zapatero +6 more
semanticscholar +1 more source
Quantum dense key distribution [PDF]
Physical Review A, 2004 This paper proposes a new protocol for quantum dense key distribution. This protocol embeds the benefits of a quantum dense coding and a quantum key distribution and is able to generate shared secret keys four times more efficiently than BB84 one. We hereinafter prove the security of this scheme against individual eavesdropping attacks, and we present ...
DEGIOVANNI, IVO PIETRO +6 more
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Quantum key distribution rates from semidefinite programming [PDF]
Quantum, 2022 Computing the key rate in quantum key distribution (QKD) protocols is a long standing challenge. Analytical methods are limited to a handful of protocols with highly symmetric measurement bases.
M. Ara'ujo +4 more
semanticscholar +1 more source
The security of practical quantum key distribution [PDF]
, 2008 Quantum key distribution (QKD) is the first quantum information task to reach the level of mature technology, already fit for commercialization. It aims at the creation of a secret key between authorized partners connected by a quantum channel and a ...
V. Scarani +5 more
semanticscholar +1 more source
Fast single-photon detectors and real-time key distillation enable high secret-key-rate quantum key distribution systems [PDF]
Nature Photonics, 2022 Quantum key distribution has emerged as the most viable scheme to guarantee information security in the presence of large-scale quantum computers and, thanks to the continuous progress made in the past 20 years, it is now commercially available. However,
Fadri Grünenfelder +13 more
semanticscholar +1 more source
Twin-field quantum key distribution without optical frequency dissemination [PDF]
Nature Communications, 2022 Twin-field (TF) quantum key distribution (QKD) has rapidly risen as the most viable solution to long-distance secure fibre communication thanks to its fundamentally repeater-like rate-loss scaling.
Lai Zhou +3 more
semanticscholar +1 more source
Quantum key distribution with quantum walks [PDF]
Quantum Information Processing, 2018 published version; 40 pages; 8 ...
Chrysoula Vlachou +4 more
openaire +4 more sources
Continuous-mode quantum key distribution with digital signal processing [PDF]
npj Quantum Information, 2022 Continuous-variable quantum key distribution (CVQKD) offers the specific advantage of sharing keys remotely by the use of standard telecom components, thereby promoting cost-effective and high-performance metropolitan applications.
Ziyang Chen +4 more
semanticscholar +1 more source