Distributed entanglement induced by dissipative bosonic media

Distributed entanglement induced by dissipative bosonic media
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耗散玻色子介质引起的分布式纠缠

DOI:
10.1209/0295-5075/99/20003
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发表时间:
2012-06
期刊:
Europhysics Letters: A Letters Journal Exploring the Frontiers of Physics
影响因子:
--
通讯作者:
Zheng, Shi-Biao
Zheng, Shi-Biao
中科院分区:
其他
文献类型:
--
作者:
Shen, Li-Tuo;Chen, Xin-Yu;Yang, Zhen-Biao;Wu, Huai-Zhi;Zheng, Shi-Biao

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我们描述了一种具有解析结果的方案,该方案允许在耗散玻色子介质上生成两个原子的稳态纠缠。介导玻色子模式和腔模式之间的共振耦合产生三个集体原子衰变通道。这种耗散动力学与经典微波场引起的单一过程一起,根据微波场相位的选择,将两个原子驱动到对称或不对称纠缠稳态。分析了非共振介导玻色子模式对稳态纠缠的影响。无论初始状态如何,都可以以高保真度获得纠缠,并且保真度与协同参数的缩放存在线性关系。保真度对经典驱动场的拉比频率的波动不敏感。
We describe a scheme with analytic result that allows to generate steady-state entanglement for two atoms over a dissipative bosonic medium. The resonant coupling between the mediating bosonic mode and cavity modes produces three collective atomic decay channels. This dissipative dynamics, together with the unitary process induced by classical microwave fields, drives the two atoms to the symmetric or asymmetric entangled steady state conditional upon the choice of the phases of the microwave fields. The effects on the steady-state entanglement of off-resonance mediating bosonic modes are analyzed. The entanglement can be obtained with high fidelity regardless of the initial state and there is a linear relation in the scaling of the fidelity with the cooperativity parameter. The fidelity is insensitive to the fluctuation of the Rabi frequencies of the classical driving fields.
通过色散玻色子介质的相干量子效应
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影响因子: --
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