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Phys Rev Lett. 2006 Aug 4;97(5):053902. Epub 2006 Aug 3.

Making tunnel barriers (including metals) transparent.

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  • 1School of Physics, University of Exeter, Exeter EX4 4QL, Devon, United Kingdom.

Abstract

The classical "brick wall," which may, according to quantum mechanics, leak via tunneling, is here shown to be completely transparent when appropriate impedance matching media are placed both in front of and behind the "wall." Optical experiments involving beyond-critical-angle-tunnel barriers in the frustrated total internal reflection scheme which mimic quantum mechanical systems provide convincing proof of this remarkable effect. The same mechanism also allows vastly enhanced transmission through unstructured thin metal films without the need for surface wave excitation.

PMID:
17026102
[PubMed]
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