Optimal asymmetric 1 → 4 quantum cloning in arbitrary dimension

被引：0
作者：
X. J. Ren
Y. Xiang
H. Fan
机构：
[1] Henan University,School of Physics and Electronics
[2] Chinese Academy of Sciences,Beijing National Laboratory for Condensed Matter Physics, Institute of Physics
来源：
The European Physical Journal D | 2011年 / 65卷
关键词：
Input State; Quantum Cloner; Cloning Machine; Support Space; Quantum Cloning Machine;
D O I：
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中图分类号：
学科分类号：
摘要：
We present an optimal asymmetric 1 → 4 quantum cloner. Our derivation generalizes the constructions of optimal asymmetric 1 → 2 and 1 → 3 quantum cloners in [Quantum Inf. Comput 5, 583 (2005)]. We explicitly prove the optimality of this cloner and give the maximum achievable fidelities. We also present the relation between the optimal quantum cloner with the multipartite entangled state which shows the singlet monogamy inequality in [Phys. Rev. Lett. 103, 050501 (2009)].
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页码：621 / 625
页数：4
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