Open AccessDetermination of complex Hermitian and anti-Hermitian interaction constants from a coupled photonic system via coherent control
Author(s) -
Zhaolong Cao,
H. C. Ong
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.030611
Subject(s) - hermitian matrix , physics , dissipative system , coupled mode theory , electromagnetically induced transparency , photonics , amplitude , coherent control , optics , quantum mechanics , refractive index , laser
By manipulating the relative amplitude and phase between two incoming lights, coherent control of photonic systems can be realized. Here, we show by temporal coupled mode theory and finite-difference time-domain simulation that a coupled system can be actively controlled to exhibit plenty of different spectral, angular, and excitation behaviors. Electromagnetically induced transparency-like and Fano spectral characteristics as well as strong beam steering have been observed. Remarkably, by selectively exciting the coupled modes, we have developed a new approach to determine the complex Hermitian and anti-Hermitian interaction constants. We find the constants are strongly geometric and material dependent and they are of importance in understanding the non-Hermitian physics arising from the dissipative, open coupled system.