Overlap and entanglement-witness measurements

被引：99

作者：

Filip, R ^{[1
]}

机构：

[1] Palacky Univ, Dept Opt, Olomouc 77207, Czech Republic

来源：

PHYSICAL REVIEW A | 2002年 / 65卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.65.062320

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A feasible device for measurement of fidelity, overlap, purity, and Hilbert-Schmidt distance of two mixed states is proposed. In addition, this device realizes a decomposable entanglement witness-measurement for bipartite systems, corresponding to Werner criterion of entanglement. The measurement, based on interferometric setup and the control-phase gate, can be directly implemented in the cavity quantum electrodynamics, trapped ion, and electromagnetically induced transparency experiments.

引用

页数：4

共 35 条

[1]

ALBER G, 2002, QUANTUM INFORMATION

[2]

[Anonymous], 2009, Quantum computation and quantum information, DOI DOI 10.1119/1.1463744

[3]

Bell J. S., 1964, Physics Physique Fizika, V1, P195, DOI [DOI 10.1103/PHYSICSPHYSIQUEFIZIKA.1.195, 10.1103/Physics-PhysiqueFizika.1.195]

[4] PROPOSED EXPERIMENT TO TEST LOCAL HIDDEN-VARIABLE THEORIES [J].