| 量子态的概率克隆和认证 |
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| 引用本文： | 段路明,郭光灿. 量子态的概率克隆和认证[J]. 物理, 1999, 28(10): 607-608,606 |
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| 作者姓名： | 段路明 郭光灿 |
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| 作者单位： | 中国科学技术大学物理系及非线性中心!合肥230026 |
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| 摘 要： | 随机地选自一组非正交的量子态不可能通过幺正过程精确克隆。但是如果 幺正演化和选择性测量过程结合起来，则可以以一定的概率精确地克隆上述输入态，文章简述了概率克隆研究的最新进展，并同它和量子态认证之间的密切联系。
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| 关 键 词： | 概率量子克隆 量子态认证 幺正－坍缩过程 |
PROBABILISTIC CLONING AND IDENTIFICATION OF QUANTUM STATES |
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| Duan Luming Guo Guangcan. PROBABILISTIC CLONING AND IDENTIFICATION OF QUANTUM STATES[J]. Physics, 1999, 28(10): 607-608,606 |
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| Authors: | Duan Luming Guo Guangcan |
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| Abstract: | Nonorthogonal quantum states cannot be faithfully cloned by a unitary evolution. However, a combination of the unitary evolution together with a measurement can yield faithful copies of nonorthogonal input states, with a postselection of the measurement results. We trace recent advances in the field of probabilistic quantum cloning, and point out its close connection with the problem of identification of a set of states. |
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| Keywords: | probabilistic quantum cloning identification of quantum states unitary-reduction process |
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