Abstract
We propose two controlled remote state preparation protocols via partially entangled channels. One prepares a single-qubit state, and the other prepares a two-qubit state. Different from other controlled remote state preparation schemes which also utilize partially entangled channels, neither auxiliary qubits nor two-qubit unitary transformations are required in our schemes, and the success probabilities are independent of the coefficients of the quantum channel. The success probabilities are 50 and 25 % for arbitrary single-qubit states and two-qubit states, respectively. We also show that the success probabilities can reach 100 % for restricted classes of states.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China under Grant No. 11004258 and the Fundamental Research Funds for the Central Universities under Grant No. CQDXWL-2012-014. It is also supported by the Natural Science Foundation Project of CQ CSTC 2011jjA90017.
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Wang, C., Zeng, Z. & Li, XH. Controlled remote state preparation via partially entangled quantum channel. Quantum Inf Process 14, 1077–1089 (2015). https://doi.org/10.1007/s11128-015-0917-0
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DOI: https://doi.org/10.1007/s11128-015-0917-0