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Nonlocal quantum cloning via quantum dots trapped in distant cavities |
| Yu Tao(于涛), Zhu Ai-Dong(朱爱东)†, and Zhang Shou(张寿) |
| Department of Physics, College of Science, Yanbian University, Yanji 133002, China |
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Abstract A scheme for implementing nonlocal quantum cloning via quantum dots trapped in cavities is proposed. By modulating the parameters of the system, the optimal 1→2 universal quantum cloning machine, 1→2 phase-covariant cloning machine, and 1→3 economical phase-covariant cloning machine are constructed. The present scheme, which is attainable with current technology, saves two qubits compared with previous cloning machines.
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Received: 02 November 2011
Revised: 27 April 2012
Accepted manuscript online:
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PACS:
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03.67.-a
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(Quantum information)
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03.67.Hk
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(Quantum communication)
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42.50.Ex
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(Optical implementations of quantum information processing and transfer)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 61068001 and 11165015) and the Nature Science Foundation of Jilin Province, China (Grant No. 201115226). |
Cite this article:
Yu Tao(于涛), Zhu Ai-Dong(朱爱东), and Zhang Shou(张寿) Nonlocal quantum cloning via quantum dots trapped in distant cavities 2012 Chin. Phys. B 21 050304
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