论文标题
通过“回头” Spad阵列启用的红外量子幽灵成像
Sub-minute Quantum Ghost Imaging in the infrared enabled by a "looking back" SPAD array
论文作者
论文摘要
量子幽灵成像（QGI）是一种有趣的成像协议，利用自发参数下转换（SPDC）引起的光子对相关性。 QGI从两路关节测量值中检索图像，其中单路检测不允许重建目标图像。到目前为止，通过栅格扫描或通过加强相机的慢电子设备的采集速度，这一技术在获取速度方面受到限制。在这里，我们报告了一个快速的QGI实现，该实现利用了用于空间解决路径的SPAD阵列检测器，从而在不到一分钟内就可以在一分钟内获取幽灵图像。此外，使用非分类SPDC允许在红外波长的情况下研究样品，而无需短波红外（SWIR）摄像机，而空间检测仍然可以在可见的区域进行，在该区域中，可以利用更先进的基于硅技术的技术。我们的发现将QGI方案的最新技术推向了实际应用。
Quantum Ghost Imaging (QGI) is an intriguing imaging protocol that exploits photon-pair correlations stemming from spontaneous parametric down-conversion (SPDC). QGI retrieves images from two-path joint measurements, where single-path detection does not allow to reconstruct the target image. This technique, has been so far limited in terms of acquisition speed either by raster scanning, or by the slow electronics of intensified cameras. Here we report on a fast QGI implementation exploiting a SPAD array detector for the spatially resolving path, enabling the acquisition of a ghost image in under one minute. Moreover, the employment of non-degenerate SPDC allows to investigate samples at infrared wavelengths without the need for short-wave infrared (SWIR) cameras, while the spatial detection can be still performed in the visible region, where the more advanced silicon-based technology can be exploited. Our findings advance the state-of-the-art of QGI schemes towards practical applications.
