Violation of a Bell inequality in two-dimensional orbital angular momentum state-spaces

被引:151
作者
Leach, J. [1 ]
Jack, B. [1 ]
Romero, J. [1 ]
Ritsch-Marte, M. [2 ]
Boyd, R. W. [3 ]
Jha, A. K. [3 ]
Barnett, S. M. [4 ]
Franke-Arnold, S. [1 ]
Padgett, M. J. [1 ]
机构
[1] Univ Glasgow, Dept Phys & Astron, SUPA, Glasgow, Lanark, Scotland
[2] Innsbruck Med Univ, Div Biomed Phys, Innsbruck, Austria
[3] Univ Rochester, Inst Opt, Rochester, NY 14627 USA
[4] Univ Strathclyde, Dept Phys, SUPA, Glasgow, Lanark, Scotland
基金
英国工程与自然科学研究理事会;
关键词
LIGHT-BEAMS; ENTANGLEMENT;
D O I
10.1364/OE.17.008287
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We observe entanglement between photons in controlled super-position states of orbital angular momentum (OAM). By drawing a direct analogy between OAM and polarization states of light, we demonstrate the entangled nature of high order OAM states generated by spontaneous downconversion through violation of a suitable Clauser Horne Shimony Holt (CHSH)-Bell inequality. We demonstrate this violation in a number of two-dimensional subspaces of the higher dimensional OAM Hilbert space. (C) 2009 Optical Society of America
引用
收藏
页码:8287 / 8293
页数:7
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