In this paper we set forth a novel connection between the Bennett 1992 protocol and a Bell inequality. This allows us to extend the usual prepare-and-measure protocol to its entanglement-based formulation. We exploit a recent result in the frame of device-independent quantum key distribution to provide a simple, model-independent, security proof for the new protocol. The minimum efficiency required for a practical implementation of the scheme is the lowest reported to date.
Cite
@article{arxiv.1111.1997,
title = {Device-independent entanglement-based Bennett 1992 protocol},
author = {Marco Lucamarini and Giuseppe Vallone and Ilaria Gianani and Giovanni Di Giuseppe and Paolo Mataloni},
journal= {arXiv preprint arXiv:1111.1997},
year = {2012}
}
Comments
7 pages, 3 figures. 3nd version: published version