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Deterministic assisted clone of an unknown four-particle entangled cluster-type state |
Ma Song-Ya (马松雅)a, Luo Ming-Xing (罗明星)b, Sun Ying (孙莹)c |
a School of Mathematics and Information Sciences, Henan University, Kaifeng 475004, China;
b School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China;
c Beijing Electronic Science and Technology Institute, Beijing 100070, China |
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Abstract Two deterministic schemes are proposed to realize the assisted clone of an unknown four-particle entangled cluster-type state. The schemes include two stages. The first stage requires teleportation via maximal entanglement as the quantum channel. In the second stages of the protocols, two novel sets of mutually orthogonal basis vectors are constructed. With the assistance of the preparer through a four-particle or two-step two-particle projective measurement under these bases, the perfect copy of an original state can be produced. Comparing with the previous protocols which produce the unknown state and its orthogonal complement state at the site of the sender, the proposed schemes generate the unknown state deterministically.
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Received: 13 March 2013
Revised: 18 April 2013
Accepted manuscript online:
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PACS:
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03.67.Hk
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(Quantum communication)
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03.67.-a
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(Quantum information)
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03.65.-w
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(Quantum mechanics)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61201253, 61303039, 11226336, 61103210, and 61272514), the Natural Science Foundation of Henan Provincial Education Department, China (Grant No. 12A120003), and the Fundamental Research Funds for the Central Universities, China (Grant No. SWJTU11BR174). |
Corresponding Authors:
Ma Song-Ya
E-mail: masongya0829@126.com
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Cite this article:
Ma Song-Ya (马松雅), Luo Ming-Xing (罗明星), Sun Ying (孙莹) Deterministic assisted clone of an unknown four-particle entangled cluster-type state 2013 Chin. Phys. B 22 110304
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