Communication protocol using terahertz metasurfaces

This work attempts to establish a communication protocol operating at terahertz (THz) frequencies by using a two-dimensional active frequency modulator for spatiotemporal information encryption. It is in line with recent developments in single-shot THz pulse detection in lithium niobate. Spatially encrypted information will be studied simultaneously in the frequency and time domains. Our preliminary study aims to demonstrate the dynamic range required of a temporal signal to retrieve spatially encoded information from static masks fabricated using the hot stamping technique.