Abstract

Within the framework of quantum electrodynamics (QED), vacuum is a nonlinear medium that can be linearized for a rapidly time-varying electromagnetic field with a small amplitude subjected to a magnetostatic field. The linearized QED vacuum is a uniaxial dielectric-magnetic medium for which the degree of anisotropy is exceedingly small. By implementing an affine transformation of the spatial coordinates, the degree of anisotropy may become sufficiently large as to be readily perceivable. The inverse Bruggeman formalism can be implemented to specify a homogenized composite material (HCM) that is electromagnetically equivalent to the affinely transformed QED vacuum. This HCM can arise from remarkably simple component materials, for example, two isotropic dielectric materials and two isotropic magnetic materials, randomly distributed as oriented spheroidal particles.

© 2012 Optical Society of America

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