  Powerful hybridization of the Cd 4$d$ state with the $d$-angular momentum
state of C$_{60}$ $\pi$ symmetry is found in the local density approximation
(LDA) structure of Cd@C$_{60}$ ground state. The photoionization of the
resulting symmetric and antisymmetric levels are computed using the time
dependent LDA method to include electron correlations. Cross sections exhibit
effects of the C$_{60}$ plasmonic motion coherently coupled to the
diffraction-type cavity oscillations induced by local emissions from C$_{60}$.
The Cd@C$_{60}$ results exhibit a substantial difference from our previous
results for Zn@C$_{60}$.
