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arXiv · 0903.2212

Experimental realization of Dicke states of up to six qubits for multiparty quantum networking

R. Prevedel·G. Cronenberg·M. S. Tame·M. Paternostro·P. Walther·M. S. Kim·A. Zeilinger
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Abstract

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 four 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 GHZ 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.

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R. Prevedel, G. Cronenberg, M. S. Tame, M. Paternostro, P. Walther, M. S. Kim, A. Zeilinger. 2009-03-12. Experimental realization of Dicke states of up to six qubits for multiparty quantum networking. https://doi.org/10.1103/physrevlett.103.020503

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