<正> We describe a theoretical scheme that allows for transfer of quantum states of atomic collective excitationbetween two macroscopic atomic ensembles localized in two spatially-separated domains.The conception is based on theoccurrence of double-exciton dark states due to the collective destructive quantum interference of the emissions from thetwo atomic ensembles.With an adiabatically coherence manipulation for the atom-field couplings by stimulated Ramannscattering,the dark states will extrapolate from an exciton state of an ensemble to that of another.This realizes thetransport of quantum information among atomic ensembles.
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