We report the experimental demonstration of two quantum networking protocols, namely quantum 1->3 telecloning and open-destination teleportation, implemented using a four-qubit register whose state is encoded in a high-quality two-photon hyperentangled Dicke state. The state resource is characterized using criteria based on multipartite entanglement witnesses. We explore the characteristic entanglement-sharing structure of a Dicke state by implementing high-fidelity projections of the four-qubit resource onto lower-dimensional states. Our work demonstrates for the first time the usefulness of Dicke states for quantum information processing.
@article{arxiv.1112.5307,
title = {Experimental Quantum Networking Protocols via Four-Qubit Hyperentangled Dicke States},
author = {A. Chiuri and C. Greganti and M. Paternostro and G. Vallone and P. Mataloni},
journal= {arXiv preprint arXiv:1112.5307},
year = {2015}
}
Comments
4 pages + Supplementary Information, 6 figures; revised version: Accepted for publication in Phys. Rev. Lett