Dimension Witnesses and Quantum State Discrimination

被引：103

作者：

Brunner, Nicolas ^{[1
,2
]}

Navascues, Miguel ^{[2
]}

Vertesi, Tamas ^{[3
]}

机构：

[1] Univ Geneva, Dept Phys Theor, CH-1211 Geneva, Switzerland

[2] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[3] Hungarian Acad Sci, Inst Nucl Res, H-4001 Debrecen, Hungary

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 15期

基金：

瑞士国家科学基金会; 英国工程与自然科学研究理事会;

关键词：

All Open Access; Green;

D O I：

10.1103/PhysRevLett.110.150501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Dimension witnesses allow one to test the dimension of an unknown physical system in a device-independent manner, that is, without placing assumptions about the functioning of the devices used in the experiment. Here we present simple and general dimension witnesses for quantum systems of arbitrary Hilbert space dimension. Our approach is deeply connected to the problem of quantum state discrimination, hence establishing a strong link between these two research topics. Finally, our dimension witnesses can distinguish between classical and quantum systems of the same dimension, making them potentially useful for quantum information processing. DOI: 10.1103/PhysRevLett.110.150501

引用

页数：4

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