二维轨道角动量态空间中对贝尔不等式的违背。
Violation of a Bell inequality in two-dimensional orbital angular momentum state-spaces.
作者信息
Leach J, Jack B, Romero J, Ritsch-Marte M, Boyd R W, Jha A K, Barnett S M, Franke-Arnold S, Padgett M J
机构信息
Department of Physics and Astronomy, SUPA, University of Glasgow, Glasgow, UK.
出版信息
Opt Express. 2009 May 11;17(10):8287-93. doi: 10.1364/oe.17.008287.
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.
我们观察到处于轨道角动量（OAM）受控叠加态的光子之间的纠缠。通过将OAM与光的偏振态进行直接类比，我们通过违反合适的克劳泽 - 霍恩 - 希莫尼 - 霍尔特（CHSH） - 贝尔不等式，证明了自发参量下转换产生的高阶OAM态的纠缠特性。我们在高维OAM希尔伯特空间的多个二维子空间中证明了这种违反情况。
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