An ensemble of emitters can behave very differently from its individual constituents when
they interact coherently via a common light field. After excitation of such an ensemble,
collective coupling can give rise to a many-body quantum phenomenon that results in short,
intense bursts of light—so-called superfluorescence. Because this phenomenon requires a
fine balance of interactions between the emitters and their decoupling from the environment,
together with close identity of the individual emitters, superfluorescence has thus far been …

An ensemble of emitters can behave differently from its individual constituents when it
interacts coherently via common vacuum light modes. One example of a many-body
collective coupling is so-called superfluorescent coupling, where the excited emitters are
initially fully uncorrelated and coherence is established through spontaneously triggered
correlations from quantum fluctuations. Subsequently, the coupled emitters emit a strong
superfluorescent pulse. Since this phenomenon requires low inhomogeneity and a fine …