Open AccessHighly Chiral Exceptional Point in Perturbed Coupled Resonators
Author(s) -
Shahab Ramezanpour,
Younes Ra’di,
Andrea Alù,
Andrey Bogdanov
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2015/1/012122
Subject(s) - chirality (physics) , resonator , degeneracy (biology) , position (finance) , physics , optics , point (geometry) , quantum mechanics , geometry , chiral anomaly , mathematics , bioinformatics , fermion , finance , nambu–jona lasinio model , economics , biology
Exceptional point (EP) is a non-Hermitian spectral degeneracy that has application in ultrasensitive sensors and laser mode selectivity. By employing strong chirality in an optical system, the direction of light propagation can be controlled and subwavelength particles can be detected. Here, we show that EP with high chirality can appear in the coupled resonators perturbed by a scatterer, in which both the distance and position of the scatterer can be tuned. We achieve strong chiral EP in two different distances between the resonators, with chirality around 0.99 in both cases.