Comment on: Direct space-time observation of pulse tunneling in an electromagnetic band gap, S.Doiron,A.Hache,H.Winful

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dc.creatorNimtz, G.
dc.creatorStahlhofen, A. A.
dc.date2007-10-26
dc.date.accessioned2026-07-07T08:38:52Z
dc.date.available2026-07-07T08:38:52Z
dc.descriptionThe title of this article is misleading. The authors have investigated a resonator but not a tunneling barrier see also Refs.\cite{Winful2} The measured superluminal group velocity and discussed is that studied on a Lorentz-Lorenz oscillator by Sommerfeld and Brillouin a hundred years ago \cite{Brillouin}. It is similar to the faster than light experiment by Wang et al. based also on anomalous dispersion with a complex refractive index of a resonator \cite{Wang}. Tunneling, however, is understood and performed by electromagnetic evanescent modes or by tunneling solutions of the Schrödinger equation, which have purely imaginary wave numbers. The latter includes a purely imaginary refractive index. Signals with purely evanescent frequency components can travel at a superluminal velocity \cite{NimtzH,Nimtz1}. Inside the barrier tunneling proceeds even instantaneously, i.e.by a process described by virtual photons \cite{Stahlhofen}.
dc.description2 pages
dc.identifierhttps://arxiv.org/abs/0710.5138
dc.identifierhttp://arxiv.org/abs/0710.5138
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/140886
dc.subjectQuantum Physics
dc.titleComment on: Direct space-time observation of pulse tunneling in an electromagnetic band gap, S.Doiron,A.Hache,H.Winful
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