D. A. B.
Miller, " On perfect cloaking," Opt. Express 14, 12457-12466
We show in principle how to
cloak a region of space to make its contents classically invisible or
transparent to waves. The method uses sensors and active sources near
the surface of the region, and could operate over broad bandwidths. A
general expression is given for calculating the necessary sources, and
explicit, fully causal simulations are shown for scalar waves.
Vulnerability to broad-band probing is discussed, and any active scheme
should detectable by a quantum probe, regardless of bandwidth.
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