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physics.optics2015
Virtual photons in macroscopic tunneling
Horst Aichmann, Guenter Nimtz, Paul Bruney
Tunnelling processes are thought to proceed via virtual waves due to observed superluminal (faster than light) signal speeds. Some assume such speeds must violate causality. These…
physics.optics2012
Negative Group Velocity and Spin-Flip in Microwave Adaptors
Alexander Carot, Horst Aichmann, Guenter Nimtz
A Fabry-Perot like interferometer with two microwaveguide adaptors as reflectors creates a passive dielectric medium with a negative group delay time due to polarization shift. A r…