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arXiv 1909.09581quant-ph
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非相干成像的量子极限是通过线性干涉术实现的

The quantum limit to incoherent imaging is achieved by linear interferometry

Cosmo Lupo, Zixin Huang, Pieter Kok

摘要:

我们解决了一般的问题,通过成像,三维位置的$N$弱非相干点状发射器在任意的空间配置确定。我们证明,线性干涉仪馈入光电探测器阵列的结构化测量策略对于该估计问题始终是最佳的,因为它饱和了量子克莱默-拉奥界限。我们提供了一种方法的显式建设的最佳干涉仪。进一步明确的结果量子费舍尔信息和最佳的干涉仪设计,达到它的情况下,一个和两个非相干发射器在傍轴制度。这项工作提供了洞察的现象,超分辨率通过非相干成像,最近引起了广泛关注。我们的研究结果将在广泛的频率范围内找到广泛的应用,从荧光显微镜到恒星干涉测量。

英文摘要:

We solve the general problem of determining, through imaging, the three-dimensional positions of $N$ weak incoherent point-like emitters in an arbitrary spatial configuration. We show that a structured measurement strategy in which a linear interferometer feeds into an array of photo-detectors is always optimal for this estimation problem, in the sense that it saturates the quantum Cramér-Rao bound. We provide a method for the explicit construction of the optimal interferometer. Further explicit results for the quantum Fisher information and the optimal interferometer design that attains it are obtained for the case of one and two incoherent emitters in the paraxial regime. This work provides insights into the phenomenon of super-resolution through incoherent imaging that has attracted much attention recently. Our results will find a wide range of applications over a broad spectrum of frequencies, from fluorescence microscopy to stellar interferometry.

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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