PT-symmetry in honeycomb photonic lattices

Alexander Szameit, Mikael C. Rechtsman, Omri Bahat-Treidel, Mordechai Segev

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Abstract

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.

Original languageEnglish (US)
Article number021806
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume84
Issue number2
DOIs
StatePublished - Aug 19 2011

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All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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