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arXiv 0708.0653quant-ph
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空间宇称空间Bell不等式的实验破坏

Experimental Violation of Bell's Inequality in Spatial-Parity Space

Timothy Yarnall, Ayman F. Abouraddy, Bahaa E. A. Saleh, Malvin C. Teich

摘要:

我们报告的第一个实验违反贝尔不等式在空间域使用Einstein-Podolsky-Rosen状态。通过光学自发参量下转换产生的双光子态被证明是纠缠在其一维横向空间分布的奇偶性。贝尔态的叠加是通过操纵光泵的横向空间宇称-一个经典参数来制备的。贝尔算子测量是通过设计简单的光学安排,执行在一维空间奇偶空间的纠缠对和投影测量到一个基础上的偶-奇函数的每个光子的旋转。贝尔算子的值为2.389 ± 0.016,超过24个标准差的不等式。

英文摘要:

We report the first experimental violation of Bell's inequality in the spatial domain using the Einstein--Podolsky--Rosen state. Two-photon states generated via optical spontaneous parametric downconversion are shown to be entangled in the parity of their one-dimensional transverse spatial profile. Superpositions of Bell states are prepared by manipulation of the optical pump's transverse spatial parity--a classical parameter. The Bell-operator measurements are made possible by devising simple optical arrangements that perform rotations in the one-dimensional spatial-parity space of each photon of an entangled pair and projective measurements onto a basis of even--odd functions. A Bell-operator value of 2.389 +- 0.016 is recorded, a violation of the inequality by more than 24 standard deviations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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