1.
Opt Lett
; 39(7): 2083-5, 2014 Apr 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-24686680
RESUMO
We present a class of waveguide arrays that is the classical analog of a quantum harmonic oscillator, where the mass and frequency depend on the propagation distance. In these photonic lattices, refractive indices and second-neighbor couplings define the mass and frequency of the analog quantum oscillator, while first-neighbor couplings are a free parameter to adjust the model. The quantum model conserves the Ermakov-Lewis invariant, thus the photonic crystal also possesses this symmetry.