Abstract
We report the experimental demonstration of two quantum networking protocols, namely quantum 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.
- Received 22 December 2011
DOI:https://doi.org/10.1103/PhysRevLett.109.173604
© 2012 American Physical Society