Geometric potential and transport in photonic topological crystals.
We report on the experimental realization of an optical analogue of a quantum geometric potential for light wave packets constrained on thin dielectric guiding layers fabricated in silica by the femtosecond laser writing technology. We further demonstrate the optical version of a topological crystal, with the observation of Bloch oscillations and Zener tunneling of a purely geometric nature.
Szameit
Alexander
A
Physics Department and Solid State Institute, Technion, 32000 Haifa, Israel. szameit@techunix.technion.ac.il
Dreisow
Felix
F
Heinrich
Matthias
M
Keil
Robert
R
Nolte
Stefan
S
Tünnermann
Andreas
A
Longhi
Stefano
S