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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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nqz `v*x(t0受激辐射下两原子有效量子纠缠

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【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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大连海事大学物理系;水利论文 YHD+P~l"C*W

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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M*@ D4T \2K*j

W5Gp,E3O/^5_,b q0【基金】：国家自然科学基金资助项目(10647107,10575017)水利论文0x T!K$H\Iq_

!|9I{3P2A8g0【分类号】：O413.1

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L.eOK6W00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,并且可以水利论文1p)\W%QU

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