Experimental realization of a three-qubit entangled W state -: art. no. 077901

被引：320

作者：

Eibl, M ^{[1
]}

Kiesel, N

Bourennane, M

Kurtsiefer, C

Weinfurter, H

机构：

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

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

[3] Natl Univ Singapore, Dept Phys, Singapore 117548, Singapore

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.92.077901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the experimental observation of the three-photon polarization-entangled W state using spontaneous parametric down-conversion. This state is inequivalent to the Greenberger-Horne-Zeilinger state under stochastic local operations and classical communications and thus is the representative of the second class of genuine tripartite entanglement. We study the characteristic features of entanglement and demonstrate the high degree of two-photon entanglement in the W state.

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