Abstract
We introduce a topological theory of perfect isolation: perfect transmission from one side and total reflection from the other side simultaneously. The theory provides an efficient approach for determining whether such a perfect-isolation point exists within a finite parameter space. Herein, we demonstrate the theory using an example of a Lorentz nonreciprocal metasurface composed of dimer unit cells. Our theory also suggests that perfect-isolation points can annihilate each other through the coalescence of opposite topological charges. Our findings could lead to novel designs for high-performance optical isolators.
Original language | English |
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Article number | 121405 |
Journal | Physical Review B |
Volume | 101 |
Issue number | 12 |
DOIs | |
Publication status | Published - 26 Mar 2020 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics