| 双模SU(1,1)相干态场与2原子相互作用过程中的保真度 |
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| 引用本文： | 张彦立,李同锴,史严,乔治. 双模SU(1,1)相干态场与2原子相互作用过程中的保真度[J]. 河北大学学报(自然科学版), 2006, 26(3): 253-257 |
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| 作者姓名： | 张彦立 李同锴 史严 乔治 |
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| 作者单位： | 石家庄铁道学院,数理系,河北,石家庄,050043 |
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| 摘 要： | 运用全量子理论,研究了双模SU(1,1)光场和2原子相互作用模型中保真度的演化特性.结果表明,平均光子数越大,2模光子数差越大,原子和光场之间的相互作用就越大,保真度越小;原子间的耦合常数影响系统、光场和原子的崩溃和回复周期,原子间的耦合常数越大,崩溃周期越短.
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| 关 键 词： | 保真度 保真度振幅 双模SU(1,1)光场 |
| 文章编号： | 1000-1565(2006)03-0253-05 |
| 修稿时间： | 2004-12-20 |
Evolution of the Fidelity of Two-model SU (1,1) Coherent States Interacting with Two Atoms |
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| ZHANG Yan-li,LI Tong-kai,SHI Yan,QIAO Zhi. Evolution of the Fidelity of Two-model SU (1,1) Coherent States Interacting with Two Atoms[J]. Journal of Hebei University (Natural Science Edition), 2006, 26(3): 253-257 |
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| Authors: | ZHANG Yan-li LI Tong-kai SHI Yan QIAO Zhi |
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| Abstract: | The properties of the evolution of the fidelities under the interaction of two-mode SU(1,1) coherent state with two atoms have been investigated.The influences of average photons and the photon-difference of two-mode field and the ratio between atom-atom couple coefficient and atom-field couple coefficient on the fidelity have been discussed.The numerical results show that the more the average photons and the photon-difference are,the lower the fidelities are;When the ratio for atom-atom couple coefficient and atom-field couple coefficient increase,the collapse-period of the fidelities shorten. |
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| Keywords: | fidelity fidelity amplitude two-mode SU(1 1) field |
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