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.
Original language | English (US) |
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Article number | 021806 |
Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
Volume | 84 |
Issue number | 2 |
DOIs | |
State | Published - Aug 19 2011 |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics