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Dissipation-induced superradiance in matter coupled to a self-interacting cavity
Sebastian Schmid, Matteo Soriente, Oded Zilberberg, Javier del Pino·June 12, 2026
Quantum PhysicsMesoscale Physics
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Abstract
Light-matter interactions are often modeled via the Dicke model, namely, by two-level systems coupled to a cavity mode. Alas, the threshold for superradiance is often experimentally inaccessible or hindered by light's diamagnetic term. Here, within the Dicke setting, we consider self-interacting light in a cavity, modeled by a photonic Kerr nonlinearity. We show that negative Kerr nonlinearity gives rise to a low-threshold superradiant phase with spin inversion. While unstable in a closed system, cavity dissipation stabilizes this lit phase, opening avenues for lasing and bath-engineered phases.