| 非线性相互作用下三qubit系统中的量子关联 |
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| 引用本文： | 刘万芳,陈逢林,马业万.非线性相互作用下三qubit系统中的量子关联[J].原子与分子物理学报,2017,34(2):311-317. |
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| 作者姓名： | 刘万芳 陈逢林 马业万 |
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| 作者单位： | 安庆师范学院 |
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| 基金项目： | 国家自然科学基金,省市自然科学基金 |
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| 摘 要： | 通过对系统施加不同的非线性作用,利用量子关联的几何度量,研究了三个qubit体系中的两体量子关联.不同的非线性相互作用模型都能使系统产生最大值为0.1752的量子关联.z方向的横场对量子关联的优化有控制作用,对于三个模型,通过调节z方向的横场,系统能产生最大值为0.09645的平均量子关联.最佳组合的三个横场,不仅能够大幅度提高量子关联的振荡周期,使得两qubit长时间处于量子关联态,而且还能够提高两qubit的平均量子关联.
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| 关 键 词： | 非线性相互作用模型 横场 量子关联的几何度量 平均量子关联 |
| 收稿时间： | 2015/10/7 0:00:00 |
| 修稿时间： | 2016/1/25 0:00:00 |
Quantum correlations of a three-qubit system based on nonlinear interaction models |
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| Liu Wan-Fang,Chen Feng-Lin and Ma Ye-Wan.Quantum correlations of a three-qubit system based on nonlinear interaction models[J].Journal of Atomic and Molecular Physics,2017,34(2):311-317. |
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| Authors: | Liu Wan-Fang Chen Feng-Lin and Ma Ye-Wan |
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| Abstract: | Quantum correlation has been studied in a three-qubit system implemented three nonlinear interaction models with external field. Three modes can generate the quantum correlation with the maximal value 0.1752. The external field of z-axis can control the optimization of average quantum correlation, and a appropriate strength can generate the maximal average quantum correlation. Due to a optimal combination of the three external fields, oscillation period of the quantum correlation can be improve intrinsically, and system stay on the states with the quantum correlation in a much longer time interval. Another vantage the optimal combination is that it improve the average quantum correlation. |
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| Keywords: | nonlinear interaction model external transverse field geometric measure of quantum correlation average quantum correlation nonlinear interaction |
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