Alternative perspective on photonic tunneling
arXiv:quant-ph/0612069 · doi:10.1103/PhysRevA.75.013813
Abstract
A relativistic quantum-mechanical description of guided waves is given, based on which we present an alternative way to describe and interpret the propagation of electromagnetic wave packets through an undersized waveguide. In particular, we show that the superluminal phenomenon of evanescent modes is actually a known conclusion in quantum field theory, and it preserves a quantum-mechanical causality.
24 pages, Revised version based on PRA75,013813(2007)