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Quantum Electrodynamics in Media with Negative Refraction

Jürgen Kästel·Michael Fleischhauer
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Abstract

We consider the interaction of atoms with the quantized electromagnetic field in the presence of materials with negative index of refraction. Spontaneous emission of an atom embedded in a negative index material is discussed. It is shown furthermore that the possibility of a vanishing optical path length between two spatially separated points provided by these materials can lead to complete suppression of spontaneous emission of an atom in front of a perfect mirror even if the distance between atom and mirror is large compared to the transition wavelength. Two atoms put in the focal points of a lens formed by a parallel slab of ideal negative index material are shown to exhibit perfect sub- and superradiance. The maximum length scale in both cases is limited only by the propagation distance within the free-space radiative decay time. Limitations of the predicted effects arising from absorption, finite transversal extension and dispersion of the material are analyzed.

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Jürgen Kästel, Michael Fleischhauer. 2004-12-01. Quantum Electrodynamics in Media with Negative Refraction. https://arxiv.org/abs/quant-ph/0412005

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