  In quantum dot circuits, screening electron clouds in strongly-coupled leads
will hybridize with the states of the artificial atom. Using a three-terminal
geometry, we directly probe the atomic structure of a quantum dot with Kondo
coupling. Our measurements reveal that this hybrid system behaves as a
non-linear entity with orbital degeneracy. Geometric distortion reduces the
symmetry, lowers the energy, and lifts the degeneracy--the Jahn-Teller effect.
