期刊
PHYSICAL REVIEW LETTERS
卷 103, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.103.020503
关键词
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资金
- EPSRC
- QIPIRC
- FWF
- EC
- U. S. Army Research
- Engineering and Physical Sciences Research Council [EP/G004579/1] Funding Source: researchfish
- EPSRC [EP/G004579/1] Funding Source: UKRI
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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