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arXiv · 1603.04048

The conditions for the preservation of duality symmetry in a linear medium

Koen van Kruining·Jörg B. Götte
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Abstract

Electric magnetic duality symmetry is well understood in vacuum. For light propagating through a medium this symmetry is typically broken. We investigate under what conditions duality transformation is preserved in a linear medium and employ these conditions to generalise the definition of optical helicity to a general linear medium. We will discuss some unique properties duality symmetric media possess, provided they exist and reformulate Maxwell's equation in such a way that they explicitly show the decoupling of opposite helicities. The feasibility of constructing a duality symmetric medium is discussed.

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Koen van Kruining, Jörg B. Götte. 2016-05-25. The conditions for the preservation of duality symmetry in a linear medium. https://doi.org/10.1088/2040-8978%2F18%2F8%2F085601

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