PT-symmetry in honeycomb photonic lattices

By Alexander Szameit, M. Rechtsman, Omri Bahat-Treidel, Mordechai Segev. 2011

223 citations recorded by the source corpus.

We apply gain and loss to honeycomb photonic lattices and show that the dispersion relation is identical to tachyons--particles with imaginary mass that travel faster than the speed of light. This is accompanied by -symmetry breaking in this structure. We further show that the -symmetry can be restored by deforming the lattice.

Subfields: Atomic and Molecular Physics, and Optics, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/fbbe41a7071e78755daf29079be6f923c51b7d37

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In Atomic and Molecular Physics, and Optics

In Statistical and Nonlinear Physics

Citations in the corpus

Topological photonics (2018, background): “Examples include photonic ‘tachyon-like’ dispersions (Szameit et al., 2011) that were demonstrated in the form of exceptional rings in photonic crystals (Zhen et al.”
PT symmetry in a fractional Schrödinger equation (2016, background): “It is also known that in topological photonics [16–19], Dirac cones in the energy zones can be deformed by the PT symmetry, which results in the complex eigenvalues [20, 21] becoming distributed in a circular fashion.”