Synchronization in Quantum Key Distribution Systems

Phase-Remapping Attack in Practical Quantum Key Distribution Systems

Chi-Hang Fred Fung, ∗ Bing Qi, † Kiyoshi Tamaki, ‡ and Hoi-Kwong Lo § Center for Quantum Information and Quantum Control, Department of Electrical & Computer Engineering and Department of Physics, University of Toronto, Toronto, Ontario, Canada NTT Basic Research Laboratories, NTT corporation, 3-1,Morinosato Wakamiya Atsugi-Shi, Kanagawa, 243-0198; CREST, JST Agency, 4-1-8 Honcho, Kawaguchi, Sa...

Quantum Key Distribution

Quantum Authenticated Key Distribution

Quantum key distribution algorithms use a quantum communication channel with quantum information and a classical communication channel for binary information. The classical channel, in all algorithms to date, was required to be authenticated. Moreover, Lomonaco [8] claimed that authentication is not possible using only quantum means. This paper reverses this claim. We design an algorithm for qu...

Quantum Key Distribution - QKD

This paper provides an overview of quantum key distribution targeted towards the computer science community. A brief description of the relevant principles from quantum mechanics is provided before surveying the most prominent quantum key distribution protocols present in the literature. In particular this paper describes the BB84 protocol and its many variants as well as Eckert's approach thro...

Layered Quantum Key Distribution

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. This approach is more efficient in the number of quantu...