Nature Communications (Jan 2019)

Demonstration of a two-dimensional $${\cal P}{\cal T}$$ PT -symmetric crystal

  • Mark Kremer,
  • Tobias Biesenthal,
  • Lukas J. Maczewsky,
  • Matthias Heinrich,
  • Ronny Thomale,
  • Alexander Szameit

DOI
https://doi.org/10.1038/s41467-018-08104-x
Journal volume & issue
Vol. 10, no. 1
pp. 1 – 7

Abstract

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To date, experimental demonstrations of PT-symmetric systems have been restricted to one dimension. Here, the authors experimentally realize and characterize a two-dimensional PT-symmetric system using photonic lattice waveguides with judiciously designed refractive index landscape and an alternating loss distribution.