Imaging through noise with quantum illumination
Imaging through noise with quantum illumination
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DOI：
10.1126/sciadv.aay2652
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发表时间：
2020-02-01
期刊：
影响因子：
13.6
通讯作者：
Padgett, M. J.
中科院分区：
文献类型：
--
作者：
Gregory, T.;Moreau, P-A;Padgett, M. J.
背景光和传感器噪声的存在可能会降低图像的对比度。为了克服这种退化，量子照明协议已经被理论化，利用光子对之间的空间相关性。在这里，我们展示了第一个通过增强检测协议使用量子照明的全视场成像系统。利用我们当前的技术，我们实现了高达 5.8 的背景和杂散光抑制，并且图像对比度提高了 11 倍，这对环境噪声和传输损耗都有弹性。量子照明协议与通常的量子方案的不同之处在于，即使存在噪声和损耗，也能保持优势。我们的方法可以使基于实验室的量子成像应用于背景光和噪声的抑制很重要的现实应用中，例如低光子通量和量子激光雷达下的成像。
The contrast of an image can be degraded by the presence of background light and sensor noise. To overcome this degradation, quantum illumination protocols have been theorized that exploit the spatial correlations between photon pairs. Here, we demonstrate the first full-field imaging system using quantum illumination by an enhanced detection protocol. With our current technology, we achieve a rejection of background and stray light of up to 5.8 and also report an image contrast improvement up to a factor of 11, which is resilient to both environmental noise and transmission losses. The quantum illumination protocol differs from usual quantum schemes in that the advantage is maintained even in the presence of noise and loss. Our approach may enable laboratory-based quantum imaging to be applied to real-world applications where the suppression of background light and noise is important, such as imaging under low photon flux and quantum LIDAR.