Mode-locking and mode-competition in a non-equilibrium solid-state condensate
arXiv:0803.2997 · doi:10.1103/PhysRevB.78.035319
Abstract
A trapped polariton condensate with continuous pumping and decay is analyzed using a generalized Gross-Pitaevskii model. Whereas an equilibrium condensate is characterized by a macroscopic occupation of a ground state, here the steady-states take more general forms. Some are characterized by a large population in an excited state, and others by large populations in several states. In the latter case, the highly-populated states synchronize to a common frequency above a critical density. Estimates for the critical density of this synchronization transition are consistent with experiments.
5 pages, 2 figures
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