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Coherent Virtual Absorption and Embedded Eigenstates in non-Hermitian P T -Symmetrical Systems

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The recently emerged concepts of coherent perfect absorption (CPA), i.e., the time-reversed counterpart of a laser and its generalization to Hermitian systems, coherent virtual absorption (CVA), are shown to be ideally suited for all-optical light manipulation. In this work, we demonstrate how the concept of coherent excitation can pave the way to light scattering control in an extreme fashion in non-Hermitian PT-symmetrical systems supporting an embedded eigenstate.

© 2019 The Author(s)

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