Nonclassical Many-Body Superradiant States with Interparticle and Spin-Momentum Entanglement
The study investigates steady-state superradiant states in a cross-cavity system of four-level atoms. It demonstrates that collective dissipation generates nonclassical photon statistics, specifically super-Poissonian light, and establishes hybrid entanglement between atomic spin and motional degrees of freedom. This has implications for quantum sensing.