Experimental realization of sub-shot-noise quantum imaging
Experimental realization of sub-shot-noise quantum imaging
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DOI：
10.1038/nphoton.2010.29
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发表时间：
2010-04-01
期刊：
影响因子：
35
通讯作者：
Berchera, I. Ruo
中科院分区：
文献类型：
--
作者：
Brida, G.;Genovese, M.;Berchera, I. Ruo
量子态的性质导致了新技术的发展，从量子信息到量子计量学（1-12）。最近出现的一个研究领域是量子成像，其目的是通过利用光的量子态的空间特性来克服经典成像的限制（13-18）。特别是，双光束之间的量子相关性是这些研究的基本资源（19-32）。最有趣的方案之一是利用参数下转换光束之间的空间量子相关性来实现弱吸收物体（14）的子散粒噪声成像，理想地导致无噪声成像。在这里，我们提出了这个计划的第一个实验实现，显示其潜力，以实现更大的信噪比比经典的成像方法。这项工作代表了这种量子技术的起点，我们预计当需要低光子通量照明时（例如用于生物样品），这种技术将得到应用。
The properties of quantum states have led to the development of new technologies, ranging from quantum information to quantum metrology(1-12). A recent field of research to emerge is quantum imaging, which aims to overcome the limits of classical imaging by making use of the spatial properties of quantum states of light(13-18). In particular, quantum correlations between twin beams represent a fundamental resource for these studies(19-32). One of the most interesting proposed schemes takes advantage of the spatial quantum correlations between parametric down-conversion light beams to realize sub-shot-noise imaging of weak absorbing objects(14), leading ideally to noise-free imaging. Here, we present the first experimental realization of this scheme, showing its potential to achieve a larger signal-to-noise ratio than classical imaging methods. This work represents the starting point for this quantum technology, which we anticipate will have applications when there is a requirement for low-photon-flux illumination (for example for use with biological samples).