Abstract
In 1998, Bender and Boettcher found that a wide class of Hamiltonians, even though non-Hermitian, can still exhibit entirely real spectra provided that they obey parity-time requirements or symmetry. Here we demonstrate experimentally passive -symmetry breaking within the realm of optics. This phase transition leads to a loss induced optical transparency in specially designed pseudo-Hermitian guiding potentials.
- Received 29 April 2009
DOI:https://doi.org/10.1103/PhysRevLett.103.093902
©2009 American Physical Society