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arXiv 1602.01111physics.opticsquant-ph
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纠缠光子的散斑统计

Speckle statistics of entangled photons

Avraham Klein, Oded Agam, Boris Spivak

摘要:

研究了多个纠缠光子在弹性散射介质中的传播,并研究了它们散斑图的统计特性。我们发现了多光子散斑的空间相关性及其对系统参数变化的敏感性。我们的分析涵盖了定向波制度,射线几乎弹道传播,同时经历小角度扩散,和真实空间扩散制度。我们证明了散斑图案的长程相关性在大孔径光子探测器的实验特征中占主导地位。我们还表明,散斑灵敏度强烈地依赖于入射光束中的光子数$N$,增加$\sqrt{N}$在定向波制度和$N$在扩散制度。

英文摘要:

We consider the propagation of several entangled photons through an elastically scattering medium and study statistical properties of their speckle patterns. We find the spatial correlations of multiphoton speckles and their sensitivity to changes of system parameters. Our analysis covers both the directed-wave regime, where rays propagate almost ballistically while experiencing small-angle diffusion, and the real-space diffusive regime. We demonstrate that long-range correlations of the speckle patterns dominate experimental signatures for large-aperture photon detectors. We also show that speckle sensitivity depends strongly on the number of photons $N$ in the incoming beam, increasing as $\sqrt{N}$ in the directed-wave regime and as $N$ in the diffusive regime.

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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