论文标题
成像时空的hong-ou-mandel干扰施密特数的双向状态
Imaging spatio-temporal Hong-Ou-Mandel interference of bi-photon state of extremely high Schmidt number
论文作者
论文摘要
我们报告了极高的Schmidt数量的双球状状态的时空hong-ou-mandel（HOM）干扰的实验观察。 1500个空间模式和总共超过3x10^6的两光子干扰，可以通过测量两个强大多模层自发性参数降低转换（SPDC）梁的远场图像的像素之间的动量空间偶然来证明，这证明了这一点。将传出的SPDC梁记录到在光子计数策略中运行的两个单独的检测器阵列上。在时间和空间域中研究了HOM干扰的特性。我们表明，两光子干扰物表现出时间和二维空间HOM倾角，可见性为30％，宽度与双光子状态的时空相干性能非常吻合。此外，我们证明了在每个图像中都证明了动量空间巧合的峰值，这与此浸入相对应。
We report the experimental observation of a spatio-temporal Hong-Ou-Mandel (HOM) interference of bi-photon states of extremely high Schmidt number. Two-photon interference of 1500 spatial modes and a total of more than 3x10^6 spatio-temporal modes is evidenced by measuring momentum spatial coincidences between the pixels of the far-field images of two strongly multimode spontaneous parametric down conversion (SPDC) beams propagating through a HOM interferometer. The outgoing SPDC beams are recorded onto two separate detectors arrays operating in the photon-counting regime. The properties of HOM interference are investigated both in the time and space domains. We show that the two-photon interferences exhibit temporal and two-dimensional spatial HOM dips with visibilities of 30% and widths in good agreement with the spatio-temporal coherence properties of the bi-photon state. Moreover, we demonstrate that a peak of momentum spatial coincidences is evidenced inside each image, in correspondence with this dip.
