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arXiv · 1112.5307

Experimental Quantum Networking Protocols via Four-Qubit Hyperentangled Dicke States

A. Chiuri·C. Greganti·M. Paternostro·G. Vallone·P. Mataloni
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Abstract

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.

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A. Chiuri, C. Greganti, M. Paternostro, G. Vallone, P. Mataloni. 2012-09-23. Experimental Quantum Networking Protocols via Four-Qubit Hyperentangled Dicke States. https://doi.org/10.1103/physrevlett.109.173604

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