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Joint remote preparation of an arbitrary 4-qubit \(\chi\)-state. (English) Zbl 1262.81030

Summary: Our purpose in this paper, is to show that several senders can jointly prepare a four-qubit \(|\chi \rangle \)-state to a remote receiver. By constructing some useful measurement bases, we first present two schemes for preparing an arbitrary \(|\chi \rangle \)-state with real coefficients or complex coefficients via the same quantum channel. Then, using the permutation group, the success probability is improved. Finally, the present schemes are generalized to multi-sender.

MSC:

81P45 Quantum information, communication, networks (quantum-theoretic aspects)
81P40 Quantum coherence, entanglement, quantum correlations
81P15 Quantum measurement theory, state operations, state preparations
20B07 General theory for infinite permutation groups
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