Revisiting the Optical PT-Symmetric Dimer
Instituto Nacional de Astrofísica, Óptica y Electrónica, Calle Luis Enrique Erro No. 1, Sta. Ma. Tonantzintla, Pue. CP 72840, Mexico
Departamento de Matemática Aplicada, Facultad de Informática, Campus Espinardo, Univesidad de Murcia, 30100 Murcia, Spain
Photonics and Mathematical Optics Group, Tecnológico de Monterrey, Monterrey 64849, Mexico
Author to whom correspondence should be addressed.
Academic Editor: Sergei D. Odintsov
Received: 10 July 2016 / Revised: 6 August 2016 / Accepted: 12 August 2016 / Published: 24 August 2016
Optics has proved a fertile ground for the experimental simulation of quantum mechanics. Most recently, optical realizations of
-symmetric quantum mechanics have been shown, both theoretically and experimentally, opening the door to international efforts aiming at the design of practical optical devices exploiting this symmetry. Here, we focus on the optical
-symmetric dimer, a two-waveguide coupler where the materials show symmetric effective gain and loss, and provide a review of the linear and nonlinear optical realizations from a symmetry-based point of view. We go beyond a simple review of the literature and show that the dimer is just the smallest of a class of planar N
-waveguide couplers that are the optical realization of the Lorentz group in 2 + 1 dimensions. Furthermore, we provide a formulation to describe light propagation through waveguide couplers described by non-Hermitian mode coupling matrices based on a non-Hermitian generalization of the Ehrenfest theorem.
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Huerta Morales, J.D.; Guerrero, J.; López-Aguayo, S.; Rodríguez-Lara, B.M. Revisiting the Optical PT-Symmetric Dimer. Symmetry 2016, 8, 83.
Huerta Morales JD, Guerrero J, López-Aguayo S, Rodríguez-Lara BM. Revisiting the Optical PT-Symmetric Dimer. Symmetry. 2016; 8(9):83.
Huerta Morales, José D.; Guerrero, Julio; López-Aguayo, Servando; Rodríguez-Lara, Blas M. 2016. "Revisiting the Optical PT-Symmetric Dimer." Symmetry 8, no. 9: 83.
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