Observation of Bloch oscillations in complex PT-symmetric photonic lattices
Observation of Bloch oscillations in complex PT-symmetric photonic lattices
Light propagation in periodic environments is often associated with a number of interesting and potentially useful processes. If a crystalline optical potential is also linearly ramped, light can undergo periodic Bloch oscillations, a direct outcome of localized Wannier-Stark states and their equidistant eigenvalue spectrum. Even though these effects have been …