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首页> 外文期刊>Physical Review, A. Atomic, molecular, and optical physics >Quantum correlations in position, momentum, and intermediate bases for a full optical field of view
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Quantum correlations in position, momentum, and intermediate bases for a full optical field of view

机译：完整光场中位置，动量和中间基的量子相关性

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摘要

We report an eight-element, linear-array, single-photon detector that uses multiple fibers of differing lengths coupled to a single detector, the timing information from which reveals the position in which the photon was measured. Using two such arrays and two detectors we measure the correlations of photons produced by parametric downconversion, without recourse to mechanical scanning. Spatial light modulators acting as variable focal length lenses positioned between the downconversion crystal and the arrays allow us to switch between measurement of position, transverse momentum, or intermediate bases. We observe the product of the variances of the conditional probabilities for position and momentum to be more than an order of magnitude below the classical limit, realizing a full-field demonstration of the Einstein-Podolsky-Rosen paradox. Such, multistate measurement technologies allow access to the higher information content of the photon based upon spatial modes.
机译：我们报告了一个八元素，线性阵列，单光子检测器，该检测器使用耦合到单个检测器的不同长度的多根光纤，其定时信息可揭示光子的测量位置。使用两个这样的阵列和两个检测器，我们无需借助机械扫描即可测量通过参数下变频产生的光子的相关性。空间光调制器充当位于下转换晶体和阵列之间的可变焦距透镜，使我们能够在位置，横向动量或中间基准的测量之间进行切换。我们观察到位置和动量的条件概率方差的乘积要比经典限度低一个数量级以上，从而实现了爱因斯坦-波多尔斯基-罗森悖论的全场演示。这样的多状态测量技术允许基于空间模式访问光子的较高信息内容。

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