论文标题
反事实鬼像
Counterfactual Ghost Imaging
论文作者
论文摘要
我们以始终是反事实的方式给出了幽灵成像的协议 - 在对象成像时，没有光与该对象相互作用。这扩展了反事实的想法，除了交流之外，表明了如何将这种有趣的现象用于计量学。在无限的极限下，没有光子进入成像的物体，它提出了一种将对象最轻敏的成像的方法，而不会损坏它们。即使不处于无限限制，它仍然可以比以前的方案相比可见性和信噪比的提高，并且吸收强度的数量级降低。
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.
