  We propose a practical solid-state system capable of demonstrating quantum
teleportation. The set-up exploits recent advances in the optical control of
excitons in coupled quantum dots, in order to produce maximally-entangled Bell
and Greenberger-Horne-Zeilinger (GHZ) states. Only two unitary transformations
are then required: a quantum Controlled-Not gate and a Hadamard gate. The laser
pulses necessary to generate the maximally-entangled states, and the
corresponding unitary transformations, are given explicitly.
