量子涨落空间模式分析器

IF 4.2 Q2 QUANTUM SCIENCE & TECHNOLOGY AVS quantum science Pub Date : 2023-06-01 DOI:10.1116/5.0148498
Charris Gabaldon, Pratik J. Barge, S. Cuozzo, I. Novikova, Hwangsuk Lee, L. Cohen, E. Mikhailov
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引用次数: 1

摘要

空间模式是电磁场描述的重要组成部分,但对于平均光子数较低的光场(如压缩真空),空间模式的描述具有挑战性。我们提出了一种基于用一组结构化掩模对其正交噪声方差进行的同差测量来重建这些场的空间模式的方法。我们从理论上证明,在某些条件下,我们可以通过使用基掩模的加权和来恢复单个空间模式分布,其中权重是使用测量的方差值和相位确定的。我们应用这种方法分析了Rb蒸气中产生不同量的过量热噪声的压缩真空场的空间结构。
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Quantum fluctuations spatial mode profiler
The spatial mode is an essential component of an electromagnetic field description, yet it is challenging to characterize it for optical fields with the low average photon number, such as in a squeezed vacuum. We present a method for the reconstruction of the spatial modes of such fields based on the homodyne measurements of their quadrature noise variance performed with a set of structured masks. We show theoretically that under certain conditions, we can recover individual spatial mode distributions by using the weighted sum of the basis masks, where weights are determined using measured variance values and phases. We apply this approach to analyze the spatial structure of a squeezed vacuum field with various amount of excess thermal noise generated in Rb vapor.
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CiteScore
9.90
自引率
0.00%
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