Excitation mechanism of incoherent superfluorescence

V. P. Klochkov, E. B. Verkhovskiĭ

V. P. Klochkov, E. B. Verkhovskiĭ

Gombojav O. Ariunbold, Vladimir A. Sautenkov, Marlan O. Scully

Kenan Gündoğdu, Franky F. So, Melike Biliroglu +3 more

Superfluorescence is a quantum optical phenomenon in which an initially excited ensemble of incoherent dipoles first acquire macroscopic coherence and then collectively recombine and radiate a burst of photons. This process is a symmetry breaking macroscopic quantum phase transition similar to superconductivity and Bose-Einstein condensation. Since quantum coherence is extremely fragile at high temperatures, similar to other macroscopic quantum phase transitions, superfluorescence has been almost always observed at cryogenic temperatures. In this presentation I will first present our results on room temperature superfluorescence in lead-halide perovskites and then present the mechanism that enables this exotic quantum phase transition at room temperature.

Roy J. Glauber, Fritz Haake

Fritz Haake, Reinhard Reibold

We investigate the interaction of spontaneous collective radiation with incoherent pumping and damping mechanisms. In discussing a recent experiment of two-color superfluorescence, we allow for two optically active level pairs which have their upper level in common. Satisfactory agreement with the experimental results is achieved.