Thermal, quantum anti-bunching and lasing thresholds from single emitters to macroscopic devices
arXiv:2011.10805 · doi:10.1103/PhysRevLett.126.063902
Abstract
Starting from a fully quantized Hamiltonian for an ensemble of identical emitters coupled to the modes of an optical cavity, we determine analytically regimes of thermal, collective anti-bunching and laser emission that depend explicitly on the number of emitters. The lasing regime is reached for a number of emitters above a critical number (which depends on the light-matter coupling, detuning and the dissipation rates) via a universal transition from thermal emission to collective anti-bunching to lasing as the pump increases. Cases where the second order intensity correlation fails to predict laser action are also presented.
12 pages, 9 figures, Supplementary Material is found at the end of the main paper