Controllable temporal reflection and refraction via coupling phase engineering
Phys. Rev. A 114, 013509 – Published 10 July, 2026
DOI: https://doi.org/10.1103/scbd-wsvn
Abstract
Temporal boundary effects provide a potential route to treat time as an additional degree of freedom in the design of optical devices, while a key challenge in this context is the controllable manipulation of temporal reflection and refraction components. In this work, we demonstrate that the abrupt phase modulation of couplings in lattice models enables tunable redistribution of the reflected and refracted intensities, and even allows control over their propagation angles. Our results demonstrate that phase engineering provides an effective strategy for controlling temporal boundary dynamics in lattice systems.
