Phys.org March 13, 2023
A team of researchers in the US (City University of New York, City College of New York, Syracuse University) has reported the observation of photonic time reflection and associated broadband frequency translation in a switched transmission-line metamaterial whose effective capacitance is homogeneously and abruptly changed via a synchronized array of switches. A pair of temporal interfaces are combined to demonstrate time-reflection-induced wave interference, realizing the temporal counterpart of a Fabry–Pérot cavity. According to the researchers their results establish the foundational building blocks to realize time metamaterials and Floquet photonic crystals, with opportunities for extreme photon manipulation in space and time… read more.
TECHNICAL ARTICLE
Observation of photonic TR. Credit: Nature Physics, 13 March 2023Â