Genuine multipartite entanglement is not a precondition for secure conference key agreement

Entanglement plays a crucial role in the security of quantum key distribution. A secret key can only be obtained by two parties if there exists a corresponding entanglement-based description of the protocol in which entanglement is witnessed, as shown by Curty et al. [M. Curty, M. Lewenstein, and N....

Full description

Bibliographic Details
Main Authors: Giacomo Carrara, Hermann Kampermann, Dagmar Bruß, Gláucia Murta
Format: Article
Language:English
Published: American Physical Society 2021-03-01
Series:Physical Review Research
Online Access:http://doi.org/10.1103/PhysRevResearch.3.013264