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

Autor(en)

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

Abstrakt

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.

Organisation(en)

Quantenoptik, Quantennanophysik und Quanteninformation

Externe Organisation(en)

Queen's University Belfast, Österreichische Akademie der Wissenschaften (ÖAW)

Journal

Physical Review Letters

Band

103

Anzahl der Seiten

4

ISSN

0031-9007

DOI

https://doi.org/10.1103/PhysRevLett.103.020503

Publikationsdatum

2009

Peer-reviewed

Ja

ÖFOS 2012

1030 Physik, Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/ae52c2be-90ea-43b5-b124-00bebc70627f