Classical electromagnetism at thermal equilibrium

Daigo Oue

doi:10.1117/12.2555448

1 April 2020 Classical electromagnetism at thermal equilibrium

Daigo Oue

Proceedings Volume 11345, Nanophotonics VIII; 1134529 (2020) https://doi.org/10.1117/12.2555448
Event: SPIE Photonics Europe, 2020, Online Only

Abstract

Starting from optical Dirac equation, an alternative form of Maxwell's equations, I introduce a statistical operator and derive the optical analogue of von Neumann equation, which is the dynamical equation of the operator. I also found one of its stationary solution, a thermal state. According to the asymptotic analysis of the thermal state, optical coherence is sustainable at the zero temperature, while unsustainable at the high temperature limit. We can regard this as decoherence of classical optical field.

Citation Download Citation

Daigo Oue "Classical electromagnetism at thermal equilibrium", Proc. SPIE 11345, Nanophotonics VIII, 1134529 (1 April 2020); https://doi.org/10.1117/12.2555448

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KEYWORDS

Electromagnetism

Thermal optics

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