Spin-orbit hybrid entanglement of photons and quantum contextuality

被引:155
作者
Karimi, Ebrahim [1 ]
Leach, Jonathan [2 ]
Slussarenko, Sergei [1 ]
Piccirillo, Bruno [1 ,3 ]
Marrucci, Lorenzo [1 ,4 ]
Chen, Lixiang [5 ]
She, Weilong [5 ]
Franke-Arnold, Sonja [2 ]
Padgett, Miles J. [2 ]
Santamato, Enrico [1 ,3 ]
机构
[1] Univ Naples Federico II, Dipartimento Sci Fis, I-80126 Naples, Italy
[2] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland
[3] Consorzio Nazl Interuniv Sci Fis Mat, Naples, Italy
[4] CNR SPIN, I-80126 Naples, Italy
[5] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China
来源
PHYSICAL REVIEW A | 2010年 / 82卷 / 02期
基金
英国工程与自然科学研究理事会;
关键词
HIDDEN-VARIABLES; VIOLATION; INEQUALITY;
D O I
10.1103/PhysRevA.82.022115
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We demonstrate electromagnetic quantum states of single photons and of correlated photon pairs exhibiting "hybrid" entanglement between spin and orbital angular momentum. These states are obtained from entangled photon pairs emitted by spontaneous parametric down conversion by employing a q plate for coupling the spin and orbital degrees of freedom of a photon. Entanglement and contextual quantum behavior (that is also nonlocal, in the case of photon pairs) is demonstrated by the reported violation of the Clauser-Horne-Shimony-Holt inequality. In addition, a classical analog of the hybrid spin-orbit photonic entanglement is reported and discussed.
引用
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页数:4
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