| 关于纠缠目击的一点注记 |
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| 引用本文： | 陶换婷,曹怀信,王中华.关于纠缠目击的一点注记[J].纺织高校基础科学学报,2013(1):68-73. |
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| 作者姓名： | 陶换婷 曹怀信 王中华 |
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| 作者单位： | 陕西师范大学数学与信息科学学院 |
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| 基金项目： | 国家自然科学基金资助项目(10871224,11171197) |
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| 摘 要： | 给出了一个量子态是纠缠态的充要条件．在有限维空间上，从特殊的量子态出发，构造出了几类特殊量子态对应的纠缠目击．最后，从算子谱定理入手，构造出了量子态的纠缠目击．
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| 关 键 词： | 量子态 纠缠态 纠缠目击 |
A note on entanglement witnesses |
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| TAO Huan-ting,CAO Huai-xin,WANG Zhong-hua.A note on entanglement witnesses[J].Basic Sciences Journal of Textile Universities,2013(1):68-73. |
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| Authors: | TAO Huan-ting CAO Huai-xin WANG Zhong-hua |
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| Affiliation: | (College of Mathematics and Information Science,Shaanxi Normal University,Xi′an 710062,China) |
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| Abstract: | Firstly,a sufficient and necessary condition of a quantum state which is entangled is given. Then, starting from special quantum states, the several special quantum state corresponding to the entanglement witnesses are introduced in the finite dimensional space. Finally, the entanglement witness of quantum states are structured from the spectral theorem of operators. |
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| Keywords: | quantum state entangled state entanglement witness |
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