水生和陆生生物的自然光隐身
Natural Light Cloaking for Aquatic and Terrestrial Creatures
摘要：
一件斗篷，可以隐藏生物从视线是一个常见的神话特征，但仍然没有实现作为一个实际的设备。为了保持波的相位，Pendry \emph{et al.}以前提出的隐身方案需要改变隐藏物体周围的电磁空间，使得弯曲的射线必须比经过它的射线传播得快得多。难以实现的相位保持要求是大目标宽带偏振不敏感隐身衣的主要障碍。在这里，我们提出了一个简化版本的Pendry的斗篷，取消了相位保持的要求，因为与人眼的相位和偏振不敏感的非相干自然光的观察无关。这使得斗篷的设计可以使用常用的材料大规模制造，我们成功地报告了在人类眼前隐藏生物，一只猫和一条鱼。
英文摘要：
A cloak that can hide living creatures from sight is a common feature of mythology but still remains unrealized as a practical device. To preserve the phase of wave, the previous cloaking solution proposed by Pendry \emph{et al.} required transforming electromagnetic space around the hidden object in such a way that the rays bending around it have to travel much faster than those passing it by. The difficult phase preservation requirement is the main obstacle for building a broadband polarization insensitive cloak for large objects. Here, we suggest a simplifying version of Pendry's cloak by abolishing the requirement for phase preservation as irrelevant for observation in incoherent natural light with human eyes that are phase and polarization insensitive. This allows the cloak design to be made in large scale using commonly available materials and we successfully report cloaking living creatures, a cat and a fish, in front of human eyes.
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