title: Trapping excitons in a two-dimensional in-plane harmonic potential: experimental evidence for equilibration of indirect excitons.
abstract: We have trapped a gas of long-lifetime, high-mobility excitons in an in-plane harmonic potential. Trapping is an important step toward the goal of a controlled Bose-Einstein condensate of excitons. We show that the repulsive interaction between the excitons plays a dominant role in the behavior of the excitons, in contrast with the weak interactions in atomic gases. We show that under proper conditions the excitons thermalize in the trap to a well-defined equilibrium spatial distribution.
authors.affiliation: Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA.
authors.forename: Z
authors.initials: Z
authors.lastname: Vörös
authors.forename: D W
authors.initials: DW
authors.lastname: Snoke
authors.forename: L
authors.initials: L
authors.lastname: Pfeiffer
authors.forename: K
authors.initials: K
authors.lastname: West