| 加光子相干场作用下原子线性熵的演化特性 |
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| 引用本文： | 赵杰,徐大海.加光子相干场作用下原子线性熵的演化特性[J].江汉大学学报(自然科学版),2007,35(2):30-32. |
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| 作者姓名： | 赵杰 徐大海 |
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| 作者单位： | 长江大学,物理科学与技术学院,湖北,荆州,434023 |
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| 摘 要： | 研究了在加光子相干场作用下,处于混态的二能级原子与加光子相干场相互作用系统中原子线性熵的演化规律.结果表明:当相干态平均光子数和加光子数较小时,原子线性熵的振动周期依赖于原子处于基态的概率;当加光子相干态的平均光子数较大时,原子线性熵呈现崩塌与回复现象,其回复周期随加光子数的增加而增加,与原子的初态无关.
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| 关 键 词： | J-C模型 线性熵 二能级原子 加光子相干态 |
| 文章编号： | 1673-0143（2007）02-0030-03 |
| 修稿时间： | 2006-08-31 |
Evolution Feature of Linear Entropies of Atom Interacting with Photon-added Coherent Field |
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| ZHAO Jie,XU Da-hai.Evolution Feature of Linear Entropies of Atom Interacting with Photon-added Coherent Field[J].Journal of Jianghan University:Natural Sciences,2007,35(2):30-32. |
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| Authors: | ZHAO Jie XU Da-hai |
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| Institution: | College of Physical Science and Technology, Yangtze University, Jinzhou 434023, Hubei, China |
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| Abstract: | The linear entropies of atom and photon-added coherent field in a two-level atom-field coupling system are investigated.The results show that atomic linear entropy is influenced by the ground state probability when the filed is weakly.For a strong filed,the phenomenon of revival and collapse is also appeared in the atomic linear entropy.With the increasing of the mean photon number,the revival period increase.The atom collapses to a unique pure state regardless of the initial atomic conditions. |
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| Keywords: | Jaynes-Cummings model linear entropy two-level atom photon-added coherent state |
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