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PT-symmetry in honeycomb photonic lattices

Alexander Szameit, Mikael C. Rechtsman, Omri Bahat-Treidel, and Mordechai Segev
Phys. Rev. A 84, 021806(R) – Published 19 August 2011

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.

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  • Received 21 April 2011

DOI:https://doi.org/10.1103/PhysRevA.84.021806

© 2011 American Physical Society

Authors & Affiliations

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

  • Physics Department and Solid State Institute, Technion, 32000 Haifa, Israel

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Issue

Vol. 84, Iss. 2 — August 2011

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