论文标题
空间模式消除以增强强度和距离测量
Spatial-mode-demultiplexing for enhanced intensity and distance measurement
论文作者
论文摘要
最近已经采用了空间模式反复传输（Spade）来测量两个不连贯的点样源之间的横向平面的分离。有人认为，这种方法可能会在光子计数制度中产生非凡的表现。在这里，我们探索了铲子，作为明亮，不连贯来源制度的精确测量的工具。首先，我们分析了估计源强度分布的第二矩的一般问题，以扩展任何形状的不一致来源。其次，我们提出了Spade在两个类似于点的明亮来源的情况下的实验应用。我们证明了该设置的使用来估计横向分离和估计其相对强度。
Spatial-mode demultiplexing (SPADE) has recently been adopted to measure the separation in the transverse plane between two incoherent point-like sources. It has been argued that this approach may yield extraordinary performances in the photon-counting regime. Here, we explore SPADE as a tool for precision measurements in the regime of bright, incoherent sources. First we analyse the general problem of estimating the second moments of the source's intensity distribution, for an extended incoherent source of any shape. Second, we present an experimental application of SPADE to the case of two point-like, bright sources. We demonstrate the use of this setup for the estimation of the transverse separation and for the estimation of their relative intensity.
