Abstract
We present a scheme for N-photon Greenberger-Horne-Zeilinger (GHZ) state analysis using hyperentanglement in polarization and time-bin degrees of freedom. The scheme only needs linear optics elements and single-photon detectors, which is feasible with current technology. The set of 2 N mutual orthogonal states can be unambiguously distinguished and the protocol is expected to find useful applications in quantum information processing.
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