  An experimental feasible scheme is proposed to generate
Greenberger-Horne-Zeilinger (GHZ) type of maximal entanglement. Distinguishing
from the previous schemes, this entanglement can be chosen between either
atomic ensembles (stationary qubit) or individual photons (flying qubit),
according to the difference applications we desire for it. The physical
requirements of the scheme are moderate and well fit the present experimental
techinque.
