Speaker
Description
Time in quantum theory is operational, it is inferred from physical processes used as clocks and from temporal correlations registered by quantum systems. The Unruh effect is a striking manifestation of this idea, uniform acceleration changes the detector's notion of time and yields a thermal response in vacuum, linking time and motion. We developed time-resolved approach to detect Unruh effect using cavity QED and coherently interacting two-level atoms. In an open system framework where acceleration and boundaries enter through two-point correlation function of field, finite cavity quality factor reshapes temporal correlations, modifying cooperative decay and coherent interactions. In superradiant regime these changes become visible in timing and width of emission burst, providing operation probe of observer dependent vacuum fluctuations.