2015/05/25 by Maksim Kozlov, G. P. Tsironis, G P Tsironis
Physics and Astronomy · #Absorption (acoustics) #Differential (mechanical device) #Distribution (mathematics) #Intensity (physics) #Nonlinear Photonic Systems #Power (physics) #Quantum Mechanics and Non-Hermitian Physics #Rabi cycle #Topological Materials and Phenomena #physics.optics
paper · pdf · doi:10.1088/1367-2630/17/10/105004
arxiv created 2015/05/25 · openalex publication_date 2015/10/14 · arxiv updated 2015/10/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We investigate wave transport properties of parity–time (PT) symmetric lattices that are periodically modulated along the direction of propagation. We demonstrate that in the regime of unbroken PT-symmetry, the system Floquet–Bloch modes may interfere constructively leading to either controlled oscillations or power absorption and unlimited amplification occurring exactly at the phase-transition point. The differential power response is affected by the overlap of the gain and loss system distribution with wave intensity pattern that is formed through Rabi oscillations engaging the coupled Floquet–Bloch modes.