Evanescent modes are virtual photonsA. A. Stahlhofen1 and G. Nimtz1, 2
1 Universität Koblenz, Institut für Integrierte Naturwissenschaften, Abteilung Physik Universitätsstrasse 1, D-56070 Koblenz, Germany
2 Universität Köln, II. Physikalisches Institut - Zülpicher-Str. 77 D-50937 Köln, Germany
received 22 May 2006; accepted in final form 31 August 2006
published online 20 September 2006
Former QED-based studies of evanescent modes identified these with virtual photons. Recent experimental studies confirmed the resulting predictions about non-locality, non-observability, violation of the Einstein relation and the existence of a commutator of field operators between two space-like separated points. Relativistic causality thus is violated by the near-field phenomenon evanescent modes while primitive causality is untouched.
03.65.Xp - Tunneling, traversal time, quantum Zeno dynamics.
42.50.Xa - Optical tests of quantum theory.
42.25.Bs - Wave propagation, transmission and absorption.
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