Thursday, January 10, 2013

1212.5602 (Gytis Kulaitis et al.)

Disordered driven coupled cavity arrays: Non-equilibrium stochastic
mean-field theory

Gytis Kulaitis, Frank Krüger, Felix Nissen, Jonathan Keeling
We study the interplay of disorder with pumping and decay in coupled qubit-cavity arrays, the Jaynes-Cummings-Hubbard model. We find that relatively weak disorder can wash out the bistability present in the clean pumped system, and that moreover, the combination of disorder in on-site energies and decay can lead to effective phase disorder. To explore these questions, we present a non- equilibrium generalisation of Stochastic-Mean-Field theory, providing a simple tool to address such questions. This technique is developed for rather general forms of light-matter coupling, driving, dissipation, and on-site disorder, making it applicable to a wide range of systems.
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