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 language||English (US)|
|Journal||Physical Review A - Atomic, Molecular, and Optical Physics|
|State||Published - Aug 19 2011|
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics