Theoretical evidence for the superluminality of evanescent modes

Abstract

Though both theoretical and experimental investigations have revealed the superluminal behavior of evanescent electromagnetic waves, there are many disputes about the physical meaning and validity of such superluminal phenomenon, which is due to the fact that the traditional investigations are based on the theory of tunneling time, and concerned with the problem of what the group velocity of evanescent waves means. In this paper, by studying the quantum probability amplitude for photons to propagate over a spacelike interval along an undersized waveguide, we present theoretical evidence for such superluminality.

References in corpus (3)

• Unified time analysis of photon and (nonrelativistic) particle Tunnelling, and the Superluminal group-velocity problem
• Measurement of Superluminal optical tunneling times in double-barrier photonic bandgaps
• Nonlocal reflection by photonic barriers

Cited by in corpus (7)

• Subluminal to superluminal propagation of an optical pulse in an f-deformed Bose- Einstein condensate
• Superluminal propagation of evanescent modes as a quantum effect
• Average and instantaneous velocities of energy of evanescent modes
• Another derivation of Weinberg's formula
• Evanescent Waves and Superluminal Behavior of Matter
• Entanglement, violation of Kramers-Kronig relation and curvature in spacetime
• Negative superluminal velocity and violation of Kramers-Kronig relations in "causal" optical setups