Journal
PHYSICAL REVIEW A
Volume 84, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.84.021806
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Funding
- European Research Council (ERC)
- Israel Science Foundation
- German-Israeli Foundation (GIF)
- German Academy of Science Leopoldina [LPDS 2009-13]
- Azrieli Foundation
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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 PT-symmetry breaking in this structure. We further show that the PT-symmetry can be restored by deforming the lattice.
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