Experimental Quantum Networking Protocols via Four-Qubit Hyperentangled Dicke States

• DOI: 10.1103/physrevlett.109.173604
• Publication Date: 2012-10-26T18:22:38Z
• Authors: A. Chiuri; C. Greganti; M. Paternostro; G. Vallone; P. Mataloni
• Keywords: Quantum Physics; 500; FOS: Physical sciences; GATES; COMPUTATION; 530; 01 natural sciences; QUBITS; name=General Physics and Astronomy; 0103 physical sciences; /dk/atira/pure/subjectarea/asjc/3100/3100; Quantum Physics (quant-ph); ENTANGLEMENT; TELEPORTATION

We report the experimental demonstration of two quantum networking protocols, namely $1\ensuremath{\rightarrow}3$ telecloning and open-destination teleportation, implemented using a four-qubit register whose state is encoded in high-quality two-photon hyperentangled Dicke state. The resource characterized criteria based on multipartite entanglement witnesses. explore characteristic entanglement-sharing structure by implementing high-fidelity projections onto lower-dimensional states. Our work demonstrates for first time usefulness states information processing.