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受激辐射下两原子有效量子纠缠：《大连海事大学学报》2008年S1期

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受激辐射下两原子有效量子纠缠

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@4f,nksP-[*J.G0郭彦青 张映辉 仲海洋

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"hd/o.Fva0【摘要】：研究了受激辐射相互作用下两原子体系的量子纠缠特性.运用量子绝热近似方法,获得了体系的有效哈密顿量,讨论了在该哈密顿量下两原子量子纠缠的动力学演化.研究结果说明,在大失谐条件下,受激辐射相互作用可以将两原子制备到最大纠缠的Bell态,在退相干时间内,原子的自发辐射及热环境对量子纠缠的影响不大.

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2h_BHO,pD!j9D}0【作者单位】：

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大连海事大学物理系;

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【关键词】：水利论文+w&uUkg!C/r

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量子纠缠 Bell态 受激辐射 自发辐射 两原子水利论文@4@ G0K2c-Y!D2h

2jU){{5A_0【基金】：国家自然科学基金资助项目(10647107,10575017)

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7lTxs(gt?0【分类号】：O413.1

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【正文快照】：

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0引言量子比特(qubit)是实现量子通信和量子计算所必需的物理资源,相应的候选者很多,如离子阱、核磁共振、超导约瑟夫森节、库伯对以及原子-光场等.制备纠缠的量子比特是实现所有量子通信和量子计算过程的基础,其中,利用原子-光场体系可以制备两原子或多原子纠缠态,并且可以

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