Quantum optomechanics with a mixture of ultracold atoms
  We study cavity optomechanics of a mixture of ultracold atoms with tunable nonlinear collisions. We show that atomic collisions provide linear couplings between fictitious condensate oscillators, leading to possibilities of achieving a globally coupled quantum optomechanical network with an integrated atom chip. Potential applications range from simulating collective nonequilibrium dynamics in fields well past physics to probing unique properties of quantum mixtures. 
H. Jing, X. Zhao, and L. F. Buchmann
quant-ph cond-mat.quant-gas physics.optics