| Role of Covariance Correlation Tensor in Establishment of Criterion of Quantum Entanglement |
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| 作者姓名： | QIAN Shang-Wu GU Zhi-Yu |
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| 作者单位： | [1]Physics Department, Peking University, Beijing 100871, China [2]Physics Department, Capital Normal University, Beijing 100037, China |
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| 摘 要： |
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| 关 键 词： | 量子论 电子纠缠 协方差 密集译码 |
| 收稿时间： | 2005-01-07 |
| 修稿时间： | 2005-01-07 |
Role of Covariance Correlation Tensor in Establishment of Criterion of Quantum Entanglement |
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| QIAN Shang-Wu GU Zhi-Yu.Role of Covariance Correlation Tensor in Establishment of Criterion of Quantum Entanglement[J].Communications in Theoretical Physics,2005,44(3):445-450. |
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| Authors: | QIAN;Shang-Wu;GU;Zhi-Yu |
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| Abstract: | This article discusses the role of covariance correlation tensor in the establishment of the criterion of quantum entanglement. It gives a simple example to show the powerfulness in the treatment of quantum dense coding, and illustrates the fact that this method also provides theoretical basis for establishing corresponding knotted pictures. |
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| Keywords: | quantum entanglement covariance correlation tensor quantum dense coding knotted picture |
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