We here present the rate analysis and a proof of principle realization of a device-independent quantum key distribution (QKD) protocol requiring the lowest detection efficiency necessary to achieve a secure key compared to device-independent protocols known so far. The protocol is based on non-maximally entangled state and its experimental realization has been performed by two-photon bipartite entangled states. The improvement with respect to protocols involving maximally entangled states has been estimated.
@article{arxiv.1310.6664,
title = {Loss tolerant device-independent quantum key distribution: a proof of principle},
author = {Giuseppe Vallone and Alberto Dall'Arche and Marco Tomasin and Paolo Villoresi},
journal= {arXiv preprint arXiv:1310.6664},
year = {2014}
}