Nonlocal quantum cloning via quantum dots trapped in distant cavities |
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Authors: | Yu Tao Zhu Ai-Dong Zhang Shou |
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Institution: | 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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Keywords: | quantum cloning quantum dots cavity quantum electrodynamics |
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