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arXiv · 2202.10567

Excitation of absorbing exceptional points in the time domain

Asaf Farhi·Ahmed Mekawy·Andrea Alu·Douglas Stone
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Abstract

We analyze the time-domain dynamics of resonators supporting exceptional points (EPs), at which both the eigenfrequencies and the eigenmodes associated with perfect capture of an input wave coalesce. We find that a time-domain signature of the EP is an expansion of the class of waveforms which can be perfectly captured. We show that such resonators have improved performance for storage or transduction of energy. They also can be used to convert between waveforms within this class. We analytically derive these features and demonstrate them for several examples of coupled optical resonator systems.

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Asaf Farhi, Ahmed Mekawy, Andrea Alu, Douglas Stone. 2022-02-21. Excitation of absorbing exceptional points in the time domain. https://doi.org/10.1103/physreva.106.l031503

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