  We introduce a new protocol in continuous variable entanglement distillation
that requires only linear temporal and constant physical or spatial
resources.Compared with the existing protocols, our protocol uses atom-photon
entanglement to substitute for atom-atom entanglement in existing protol, which
will not only save the number of quantum memories, but also has the advantages
in operation efficiency and temporal saving. The distillation can be realized
by a fixed model of iterations, in which only three quantum memories and photon
detectors are required.
