图像处理中的量子极限
Quantum limits in image processing
摘要:
我们确定的最大可实现的灵敏度在一个标量参数的估计从包含在光学图像中的量子噪声的存在下的信息的约束。基于Cramer-Rao界限的该限制对于任何图像处理协议都是有效的。它是在一个散粒噪声有限的图像和非经典照明的情况下计算的。我们还给出了实际的实验实现,使我们能够达到这个绝对极限。
英文摘要:
We determine the bound to the maximum achievable sensitivity in the estimation of a scalar parameter from the information contained in an optical image in the presence of quantum noise. This limit, based on the Cramer-Rao bound, is valid for any image processing protocol. It is calculated both in the case of a shot noise limited image and of a non-classical illumination. We also give practical experimental implementations allowing us to reach this absolute limit.
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