Layered Quantum Key Distribution
Abstract
We introduce a family of QKD protocols for distributing shared random keys within a network of 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 quantum channel uses than conventional quantum key distribution using bipartite links. Additionally, multi-partite high-dimensional quantum states are becoming readily available in quantum photonic labs, making the proposed protocols implementable using current technology.
Cite
@article{arxiv.1709.00377,
title = {Layered Quantum Key Distribution},
author = {Matej Pivoluska and Marcus Huber and Mehul Malik},
journal= {arXiv preprint arXiv:1709.00377},
year = {2018}
}
Comments
11 pages, 5 figures. In version 2 we extended section 4 about the dimension-rate trade-off and corrected minor errors