Anderson Localization of Composite Excitations in Disordered   Optomechanical Arrays
  Optomechanical arrays are a promising future platform for studies of transport, many-body dynamics, quantum control and topological effects in systems of coupled photon and phonon modes. We introduce disordered optomechanical arrays, focusing on features of Anderson localization of hybrid photon-phonon excitations. It turns out that these represent a unique disordered system, where basic parameters can be easily controlled by varying the frequency and the amplitude of an external laser field. We show that the two-species setting leads to a non-trivial frequency dependence of the localization length for intermediate laser intensities. This could serve as a convincing evidence of localization in a non-equilibrium dissipative situation. 
Thales Figueiredo Roque, Vittorio Peano, Oleg M. Yevtushenko, Florian   Marquardt
cond-mat.mes-hall cond-mat.dis-nn quant-ph