Experimental Realization of Dicke States of up to Six Qubits for Multiparty Quantum Networking

Author(s): R. Prevedel, G. Cronenberg, M. S. Tame, M. Paternostro, P. Walther, M. S. Kim, A. Zeilinger

Journal: Physical Review Letters

Volume: 103

Page(s): 020503

Year: 2009

DOI Number: 10.1103/PhysRevLett.103.020503

Link: Link to publication


We report the first experimental generation and characterization of a six-photon Dicke state. The produced state shows a fidelity of F=0.56+-0.02 with respect to an ideal Dicke state and violates a witness detecting genuine six-qubit entanglement by 4 standard deviations. We confirm characteristic

Dicke properties of our resource and demonstrate its versatility by projecting out four- and five-photon Dicke states, as well as four-photon Greenberger-Horne-Zeilinger and W states. We also show that Dicke states have interesting applications in multiparty quantum networking protocols such as open-destination

teleportation, telecloning, and quantum secret sharing.

Note: http://arxiv.org/abs/0903.2212

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