1.
Phys Rev Lett
; 109(17): 173604, 2012 Oct 26.
Artigo
em Inglês
| MEDLINE
| ID: mdl-23215188
RESUMO
We report the experimental demonstration of two quantum networking protocols, namely quantum 1â3 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.