• Corpus ID: 119070947

Demonstration of a two-dimensional PT-symmetric crystal: Bulk dynamics, topology, and edge states

  title={Demonstration of a two-dimensional PT-symmetric crystal: Bulk dynamics, topology, and edge states},
  author={Mark Kremer and Tobias Biesenthal and Matthias Heinrich and Ronny Thomale and Alexander Szameit},
  journal={arXiv: Optics},
In 1998, Carl Bender challenged the perceived wisdom of quantum mechanics that the Hamiltonian operator describing any quantum mechanical system has to be Hermitian. He showed that Hamiltonians that are invariant under combined parity-time (PT) symmetry transformations likewise can exhibit real eigenvalue spectra. These findings had a particularly profound impact in the field of photonics, where PT-symmetric potential landscapes can be implemented by appropriately distributing gain and loss… 

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