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J. Phys. B: At. Mol. Opt. Phys. 41, 095501 (6pp) (2008)


Joint remote state preparation

N. B. An and Jaewan Kim

Alice, Bob and Charlie are three remote parties. Alice and Bob share the classical knowledge of a secret qubit state. We consider the following question: ‘how can Alice and Bob jointly prepare the qubit state for Charlie? Two different protocols are proposed for such a joint remote state preparation. The first protocol uses a single GHZ state while the second one uses a pair of EPR states as the quantum channel whose entanglement is not necessarily maximal.