Detecting entanglement of continuous variables with three mutually unbiased bases

被引：16
|
作者：
Paul, E. C. [1 ]
Tasca, D. S. [1 ,2 ]
Rudnicki, Lukasz [3 ,4 ]
Walborn, S. P. [1 ]
机构：
[1] Univ Fed Rio de Janeiro, Inst Fis, Caixa Postal 68528, BR-21941972 Rio De Janeiro, RJ, Brazil
[2] Univ Fed Fluminense, Inst Fis, BR-24210346 Niteroi, RJ, Brazil
[3] Univ Cologne, Inst Theoret Phys, Zulpicher Str 77, D-50937 Cologne, Germany
[4] Polish Acad Sci, Ctr Theoret Phys, Aleja Lotnikow 32-46, PL-02668 Warsaw, Poland
来源：
PHYSICAL REVIEW A | 2016年 / 94卷 / 01期
关键词：
SEPARABILITY CRITERION; SYSTEMS;
D O I：
10.1103/PhysRevA.94.012303
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
An uncertainty relation is introduced for a symmetric arrangement of three mutually unbiased bases in continuous-variable phase space, and then used to derive a bipartite entanglement criterion based on the variance of global operators composed of these three phase-space variables. We test this criterion using spatial variables of photon pairs and show that the entangled photons are correlated in three pairs of bases.
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页数：6
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