| 非旋波近似的Zeno时间计算 |
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| 引用本文： | 李兴敏 严冬李超,宋立军. 非旋波近似的Zeno时间计算[J]. 量子电子学报, 2013, 30(5): 549-553 |
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| 作者姓名： | 李兴敏 严冬李超 宋立军 |
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| 作者单位： | 1 长春理工大学理学院,吉林 长春 130022;2 长春大学理学院,吉林 长春 130022;3 吉林大学物理学院,吉林 长春 130022 |
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| 摘 要： | 在非旋波近似条件下,利用中岛变换对二能级系统哈密顿量进行幺正转换,将耦合条件进行适当拓宽,在更加广泛的适应范围内计算Zeno时间,研究二能级系统非旋波项对Zeno时间的影响。计算发现,Zeno时间与二能级系统的能级间隔成反比关系,与旋波近似条件下的计算结果比较,非旋波近似条件的Zeno时间计算更加准确。同时表明,只有基于相同物理模型的非旋波项才可以使量子Zeno时间的计算更加精确。
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| 关 键 词： | 量子光学 Zeno时间 中岛变换 量子Zeno效应 非旋波近似 |
| 收稿时间： | 2012-10-12 |
| 修稿时间： | 2012-12-06 |
Calculate Zeno time without rotating wave approximation |
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| LI Xing-Min,YAN Dong,LI Chao,SONG Li-Jun. Calculate Zeno time without rotating wave approximation[J]. Chinese Journal of Quantum Electronics, 2013, 30(5): 549-553 |
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| Authors: | LI Xing-Min YAN Dong LI Chao SONG Li-Jun |
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| Affiliation: | 1 School of Science,Changchun University of Science and Technology,Changchun 130022,China ; 2 College of Science,Changchun University,Changchun 130022,China ; 3 College of Physics,Jilin University,Changchun 130012,China |
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| Abstract: | In the condition of non-rotating wave approximation, Nakajima transform is used to make a unitary transformation of the two-level system Hamiltonian; coupling condition is broadened appropriately to calculate Zeno time in a much broader range in order to study the effect of non-rotating wave item on Zeno time in a two-level system. Calculating results show that Zeno time is in inverse proportion to the energy interval of the two-level system, which turns out to be more accurate compared with that in rotating wave approximation. In addition, only when compared in the same type of physical model can quantum Zeno time be more accurately described. |
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| Keywords: | quantum optics Zeno time Nakajima transform quantum Zeno effect non-rotating wave approximation |
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