作者
Robert Prevedel, Gunther Cronenberg, Mark S Tame, Mauro Paternostro, Philip Walther, Mu-Seong Kim, Anton Zeilinger
发表日期
2009/7/10
期刊
Physical review letters
卷号
103
期号
2
页码范围
020503
出版商
American Physical Society
简介
We report the first experimental generation and characterization of a six-photon Dicke state. The produced state shows a fidelity of 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 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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