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Open Quantum Systems Decoherence

Coherent-perfect-absorber and laser for bound states in a continuum

arXiv

Authors: Bikashkali Midya, Vladimir V. Konotop

Year

2017

Paper ID

25279

Status

Preprint

Abstract Read

~2 min

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Abstract

It is shown that two fundamentally different phenomena, the bound states in continuum and the spectral singularity (or time-reversed spectral singularity), can occur simultaneously. This can be achieved, in particular, in a rectangular core dielectric waveguide with embedded active (or absorbing) layer. In such a system a two-dimensional bound state in a continuum is created in the plane of a waveguide cross section and it is emitted or absorbed along the waveguide core. The idea can be used for experimental implementation of a laser or a coherent-perfect-absorber for photonic bound state that resides in a continuous spectrum.

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It is shown that two fundamentally different phenomena, the bound states in continuum and the spectral singularity (or time-reversed spectral singularity), can occur...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1711.01986 [2] arXiv https://arxiv.org/abs/1711.01986 [3] Publisher https://arxiv.org/abs/1711.01986

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