We demonstrate that optical tachyons, particles that travel faster than the speed of light, can be generated by PT-symmetry breaking in photonic graphene. We further show that the PT-symmetry can be restored via strain.
© 2011 OSA
A. Szameit, M. C. Rechtsman, O. Bahat-Treidel, and M. Segev, "Optical tachyons, broken PT-symmetry, and strain effects in photonic graphene," in CLEO:2011 - Laser Applications to Photonic Applications, OSA Technical Digest (CD) (Optical Society of America, 2011), paper QThD1.
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