Generation of any superposition of Dicke state of excitons in coupled   quantum dots
  We present a scheme to generate arbitrary superposition of the Dicke states of excitons in optically driven quantum dots. This proposal is based on a sequence of laser pulses, which are tuned appropriately to control transitions on Dicke state. It is shown that N laser pulses are needed to generate arbitrary superposition of the Dicke states of N quantum dots. 
XuBo Zou, K. Pahlke and W. Mathis