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Random matrix theory approach to chaotic Coherent Perfect Absorbers

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Fleischmann,  Ragnar
Department of Nonlinear Dynamics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Li, H., Suwunnarat, S., Fleischmann, R., Schanz, H., & Kottos, T. (2017). Random matrix theory approach to chaotic Coherent Perfect Absorbers. Physical Review Letters, 118(4): 044101. doi:10.1103/PhysRevLett.118.044101.


Cite as: http://hdl.handle.net/11858/00-001M-0000-002C-60DA-D
Abstract
We employ random matrix theory in order to investigate coherent perfect absorption (CPA) in lossy systems with complex internal dynamics. The loss strength γ_{CPA} and energy E_{CPA}, for which a CPA occurs, are expressed in terms of the eigenmodes of the isolated cavity-thus carrying over the information about the chaotic nature of the target-and their coupling to a finite number of scattering channels. Our results are tested against numerical calculations using complex networks of resonators and chaotic graphs as CPA cavities.