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Infinite asymptotic degeneracy and subwavelength three-dimensional far-field localization in spherical structures

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Abstract

We show that spherical structures exhibit an infinite-asymptotic- eigenpermittivity degeneracy. We then consider the possibility that the time reversal of the field emitted by atomic/molecular-transition current will spatially correlate with it, leading to strong light-matter interaction.

© 2021 The Author(s)

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