Hardy's nonlocality proof using twisted photons

被引：25

作者：

Chen, Lixiang ^{[1
]}

Romero, Jacquiline ^{[2
,3
]}

机构：

[1] Xiamen Univ, Dept Phys, Xiamen 361005, Peoples R China

[2] Univ Glasgow, Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[3] Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark, Scotland

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 19期

基金：

中国国家自然科学基金;

关键词：

ORBITAL ANGULAR-MOMENTUM; ALL ENTANGLED STATES; QUANTUM-MECHANICS; BELL INEQUALITIES; LOCAL REALISM; PARTICLES; VIOLATION; ASSUMPTIONS; VARIABLES; SPACES;

D O I：

10.1364/OE.20.021687

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Hardy's nonlocality proof is considered as "the best version of Bell's theorem". We report an experimental implementation of this by measuring the orbital angular momentum (OAM) of entangled twisted photon pairs. Two advantages arise from using twisted photons. First, the limited OAM spectrum generated by parametric down-conversion provides a natural set of OAM non-maximally entangled states with selective degrees of entanglement. Second, the measurement of any non-trivial superposition of OAM states can be conveniently done with spatial light modulators. We measure states that are defined on asymmetric OAM Bloch spheres and show results which are incompatible with local realism. (C) 2012 Optical Society of America

引用

页码：21687 / 21692

页数：6

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