Max Ludwig, Florian Marquardt
We study the nonlinear driven dissipative quantum dynamics of an array of optomechanical systems. At each site of such an array, a localized mechanical mode interacts with a laser-driven cavity mode via radiation pressure, and both photons and phonons can hop between neighboring sites. The competition between coherent interaction and dissipation gives rise to a rich phase diagram characterizing the optical and mechanical many-body states. For weak intercellular coupling, the mechanical motion at different sites is incoherent due to the influence of quantum noise. When increasing the coupling strength, however, we observe a phase transition towards a regime of phase-coherent mechanical oscillations. This transition and the phase diagram of the system are studied using a Gutzwiller ansatz for the dynamics of the driven-dissipative system.
View original:
http://arxiv.org/abs/1208.0327
No comments:
Post a Comment