Physics – Optics
Scientific paper
2010-08-12
Phys. Rev. A 82, 055804 (2010)
Physics
Optics
Under review at Phys. Rev. A
Scientific paper
10.1103/PhysRevA.82.055804
The concept of an \emph{active drain} has been used recently to provide an
optical element which manages to perfectly sink incoming electromagnetic
radiation. Here I show that without prior knowledge of the incoming signal, an
element attempting respond as an active localized drain cannot succeed.
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