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

Authors
  • Prevedel, R
  • Cronenberg, G
  • Tame, M S
  • Paternostro, M
  • Walther, P
  • Kim, M S
  • Zeilinger, A
Type
Published Article
Journal
Physical review letters
Publication Date
Jul 10, 2009
Volume
103
Issue
2
Pages
20503–20503
Identifiers
PMID: 19659190
Source
Medline
License
Unknown

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.

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