Counterfactual ghost imaging
Counterfactual ghost imaging
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DOI：
10.1038/s41534-021-00411-4
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发表时间：
2021-06-02
影响因子：
7.6
通讯作者：
Rarity, John
中科院分区：
文献类型：
--
作者：
Hance, Jonte R.;Rarity, John
我们给出了一种幽灵成像的协议，这种协议总是反事实的--当对一个物体成像时，没有光与该物体相互作用。这将反事实的概念扩展到交流之外，显示了这一有趣的现象如何被用于计量。在无限的极限中，没有光子到达被成像的物体，它提供了一种即使是最敏感的物体也可以成像而不会损坏它们的方法。即使在没有无限限制的情况下，它仍然在可见度和信噪比方面比以前的协议提高了许多倍，吸收强度降低了一个数量级以上。
We give a protocol for ghost imaging in a way that is always counterfactual-while imaging an object, no light interacts with that object. This extends the idea of counterfactuality beyond communication, showing how this interesting phenomenon can be leveraged for metrology. Given, in the infinite limit, no photons ever go to the imaged object, it presents a method of imaging even the most light-sensitive of objects without damaging them. Even when not in the infinite limit, it still provides a many-fold improvement in visibility and signal-to-noise ratio over previous protocols, with over an order of magnitude reduction in absorbed intensity.