Experimental analysis of a four-qubit photon cluster state -: art. no. 210502

被引：244

作者：

Kiesel, N ^{[1
]}

Schmid, C

Weber, U

Tóth, G

Gühne, O

Ursin, R

Weinfurter, H

机构：

[1] Max Planck Inst Quantum Opt, D-85748 Garching, Germany

[2] Univ Munich, Dept Phys, D-80797 Munich, Germany

[3] Austrian Acad Sci, Inst Quantenopt & Quanteninformat, A-6020 Innsbruck, Austria

[4] Univ Vienna, Inst Expt Phys, A-1090 Vienna, Austria

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.95.210502

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Linear-optics quantum logic operations enabled the observation of a four-photon cluster state. We prove genuine four-partite entanglement and study its persistency, demonstrating remarkable differences from the usual Greenberger-Horne-Zeilinger (GHZ) state. Efficient analysis tools are introduced in the experiment, which will be of great importance in further studies on multiparticle entangled states.

引用

页数：4

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