Artificial trapping of a stable high-density dipolar exciton fluid

We present compelling experimental evidence for a successful electrostatic trapping of two-dimensional dipolar excitons that results in stable formation of a well confined, high density and spatially uniform dipolar exciton fluid. This method should allow study of strongly interacting bosons in two dimensions at low temperatures, towards the observation of quantum phase transitions of 2D interacting excitons, such as superfluidity and crystallization.