A robust and scalable scheme for generating atom-photon and atom-atom entangled W states is proposed by using the interference effect of the polarized photons leaking out of the spatially separated cavities. Each of the atoms is trapped separately in a remote optical cavity, and the possible spontaneous channels induced by the excited atoms lead to the coherent superposition between atoms and photon, which is an important step toward long-distance and long-range quantum networking with individual atoms. The scalability is ensured in the sense that an arbitrarily large multiqubit atom-photon and atom-atom entangled W state can be generated with certain success probabilities.
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