Ermakov-Lewis symmetry in photonic lattices

Abstract

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 posses this symmetry.

arXiv comment8 pages, 3 figures

References in corpus (2)

• Partial Dynamical Symmetries
• Coherent states for time dependent harmonic oscillator: the step function

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