Entanglement detection via mutually unbiased bases

被引：154
|
作者：
Spengler, Christoph [1 ]
Huber, Marcus [1 ,2 ]
Brierley, Stephen [2 ]
Adaktylos, Theodor [1 ]
Hiesmayr, Beatrix C. [1 ,3 ]
机构：
[1] Univ Vienna, Fac Phys, A-1090 Vienna, Austria
[2] Univ Bristol, Dept Math, Bristol BS8 1TW, Avon, England
[3] Masaryk Univ, Inst Theoret Phys & Astrophys, CS-61137 Brno, Czech Republic
来源：
PHYSICAL REVIEW A | 2012年 / 86卷 / 02期
关键词：
KINGS PROBLEM;
D O I：
10.1103/PhysRevA.86.022311
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigate correlations among complementary observables. In particular, we show how to take advantage of mutually unbiased bases for the efficient detection of entanglement in arbitrarily high-dimensional, multipartite, and continuous-variable quantum systems. The introduced entanglement criteria are relatively easy to implement experimentally since they require only a few local measurement settings. In addition, we establish a link between the separability problem and the maximum number of mutually unbiased bases-opening an additional avenue in this long-standing open problem.
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页数：8
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