  The entanglement of excitonic states in a system of $N$ spatially separated
semiconductor microcrystallites is investigated. The interaction among the
different microcrystallites is mediated by a single-mode cavity field. It is
found that the symmetric sharing of the entanglement (measured by the
concurrence) between any pair of the excitonic state with $N$ qubits defined by
the number states (vacuum and a single-exciton states) or the coherent states
(odd and even coherent states) can be prepared by the cavity field for this
system.
