Many-Body Quantum Optics of Superfluorescent Perovskite Quantum Dots

Superfluorescence (SF) is a collective spontaneous emission phenomenon occurring when emitters are located within sub-wavelength distances, resulting in enhanced brightness and emission rates [1]. During this process, the emitters synchronize and emit a short, intense pulse of light. Over decades of theoretical [2] and experimental research [3], SF has been predicted and observed in numerous platforms, primarily those with very weak disorder. However, the requirement for weak disorder significantly limits the platforms and conditions (e.g., cryogenic temperatures) in which SF can occur. Recent studies have reported the emergence of SF in perovskite quantum dots, despite strong disorder and high temperatures [4–7]. These results raise important questions about how SF can exist under high disorder conditions and whether this phenomenon could extend to other disordered platforms [8].