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

Robert Prevedel, Gunther Cronenberg, Mark S Tame, Mauro Paternostro, Philip Walther, Myung Sunny Kim, Anton Zeilinger

Publications: Contribution to journalArticlePeer Reviewed

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 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.
Original languageEnglish
Article number020503
Number of pages4
JournalPhysical Review Letters
Volume103
Issue number2
DOIs
Publication statusPublished - 2009

Austrian Fields of Science 2012

  • 1030 Physics, Astronomy

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