Experimental detection of multipartite entanglement using witness operators -: art. no. 087902

被引：400

作者：

Bourennane, M ^{[1
]}

Eibl, M

Kurtsiefer, C

Gaertner, S

Weinfurter, H

Gühne, O

Hyllus, P

Bruss, D

Lewenstein, M

Sanpera, A

机构：

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

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

[3] Leibniz Univ Hannover, Inst Theoret Phys, D-30167 Hannover, Germany

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.92.087902

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the experimental detection of genuine multipartite entanglement using entanglement witness operators. To this aim, we introduce a canonical way of constructing and decomposing witness operators so that they can be directly implemented with present technology. We apply this method to three- and four-qubit entangled states of polarized photons, giving experimental evidence that the considered states contain true multipartite entanglement.

引用

页数：4

共 22 条

[1] Classification of mixed three-qubit states -: art. no. 040401 [J].

Acín, A ;

Bruss, D ;

Lewenstein, M ;

Sanpera, A .

PHYSICAL REVIEW LETTERS, 2001, 87 (04) :40401-1

[2] Detection of entanglement with polarized photons: Experimental realization of an entanglement witness [J].

Barbieri, M ;

De Martini, F ;

Di Nepi, G ;

Mataloni, P ;

D'Ariano, GM ;

Macchiavello, C .

PHYSICAL REVIEW LETTERS, 2003, 91 (22)

[3]

Bell JS., 1964, PHYS PHYS FIZIKA, V1, P195, DOI [10.1103/Physics-PhysiqueFizika.1.195, 10.1103/PhysicsPhysiqueFizika.1.195, DOI 10.1103/PHYSICSPHYSIQUEFIZIKA.1.195]

[4] Reflections upon separability and distillability [J].

Bruss, D ;

Cirac, JI ;

Horodecki, P ;

Hulpke, F ;

Kraus, B ;

Lewenstein, M ;

Sanpera, A .

JOURNAL OF MODERN OPTICS, 2002, 49 (08) :1399-1418

[5] Bell-type inequalities to detect true n-body nonseparability -: art. no. 170405 [J].

Collins, D ;

Gisin, N ;

Popescu, S ;

Roberts, D ;

Scarani, V .

PHYSICAL REVIEW LETTERS, 2002, 88 (17) :1704051-1704054

[6] Three qubits can be entangled in two inequivalent ways [J].

Dur, W. ;

Vidal, G. ;

Cirac, J.I. .

Physical Review A - Atomic, Molecular, and Optical Physics, 2000, 62 (06) :062314-062311

[7] Experimental realization of a three-qubit entangled W state -: art. no. 077901 [J].

Eibl, M ;

Kiesel, N ;

Bourennane, M ;

Kurtsiefer, C ;

Weinfurter, H .

PHYSICAL REVIEW LETTERS, 2004, 92 (07)

[8] Experimental observation of four-photon entanglement from parametric down-conversion [J].

Eibl, M ;

Gaertner, S ;

Bourennane, M ;

Kurtsiefer, C ;

Zukowski, M ;

Weinfurter, H .

PHYSICAL REVIEW LETTERS, 2003, 90 (20) :1-200403

[9]

GAERTNER S, IN PRESS APPL PHYS B

[10] Entanglement criteria for all bipartite Gaussian states [J].

Giedke, G ;

Kraus, B ;

Lewenstein, M ;

Cirac, JI .

PHYSICAL REVIEW LETTERS, 2001, 87 (16)

← 1 2 3 →