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arXiv · 2004.12606

Controlling Exceptional Points with Light

Ayan Banerjee·Awadhesh Narayan
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Abstract

We propose and show that application of light leads to an intriguing platform for controlling exceptional points in non-Hermitian topological systems. We demonstrate our proposal using three different non-Hermitian systems -- nodal line semimetals, semi-Dirac semimetals and Dirac semimetals -- and show that using illumination with light one can engineer the positions and stability of exceptional points. We illustrate the topological properties of these models and map out their light-driven topological phase transitions.

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Ayan Banerjee, Awadhesh Narayan. 2020-12-01. Controlling Exceptional Points with Light. https://doi.org/10.1103/physrevb.102.205423

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