论文标题
使用九个多代尔图像采集来测量轨道 - 角度摩托明的纯净状态
Measurement of pure states of light in the orbital-angular-momentum basis using nine multipixel image acquisitions
论文作者
论文摘要
在轨道角动量（OAM）基础上测量高维纯净光状态的现有技术要么涉及大量的单像素数据采集和大量的选择后选择误差，这些误差会随维度而增加，要么涉及实质性损失，或者需要对已知相的参考梁的干扰。在这里，我们提出了一种干涉技术，该技术只能使用九个多代尔图像采集来测量未知的纯状态，而无需涉及选择后，丢失或单独的参考光束。该技术基本上测量了输入场的两个复杂相关函数，然后采用递归后处理算法来推断状态。我们在实验上证明了纯状态至25的纯状态的技术，报告的平均保真度大于90％，直到11个维度。我们的技术可以显着提高基于OAM的信息处理应用程序的性能。
The existing techniques for measuring high-dimensional pure states of light in the orbital angular momentum (OAM) basis either involve a large number of single-pixel data acquisitions and substantial postselection errors that increase with dimensionality, or involve substantial loss, or require interference with a reference beam of known phase. Here, we propose an interferometric technique that can measure an unknown pure state using only nine multipixel image acquisitions without involving postselection, loss, or a separate reference beam. The technique essentially measures two complex correlation functions of the input field and then employs a recursive postprocessing algorithm to infer the state. We experimentally demonstrate the technique for pure states up to dimensionality of 25, reporting a mean fidelity greater than 90 % up to 11 dimensions. Our technique can significantly improve the performance of OAM-based information processing applications.
