Scalable preparation of multiple-particle entangled states via the cavity input-output process
Scalable preparation of multiple-particle entangled states via the cavity input-output process
复制标题
通过腔输入输出过程可扩展地制备多粒子纠缠态
DOI：
10.1103/physreva.74.052339
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发表时间：
2006-11-01
影响因子：
2.9
通讯作者：
Li, Xing-Hua
中科院分区：
文献类型：
--
作者：
Lin, Xiu-Min;Xue, Peng;Li, Xing-Hua
基于腔的输入输出关系，我们分别提出了制备多原子纠缠态和多光子Greenberger-Horne-Zeilinger态的方案。数值模拟表明，即使原子不处于Lamb-Dicke区域，所产生的多粒子纠缠态也具有很高的保真度。一些实际的量子噪声，如原子自发辐射和输出耦合效率低，只会降低成功几率，而不会对制备的多粒子纠缠态的保真度产生影响。在理想情况下，我们的协议的成功概率接近1。此外，不需要单独寻址，从实验的角度来看，该方案易于实现。
We propose schemes for generating multiple-atom entangled states and a multiple-photon Greenberger-Horne-Zeilinger state, respectively, based on the input-output relation of the cavity. The numerical simulations show that produced multiple-particle entangled states have high fidelity even if the atoms are not localized in the Lamb-Dicke regime. Some practical quantum noises, such as atomic spontaneous emission and output coupling inefficiency, only decrease the success probability but exert no influence on the fidelity of prepared multiple-particle entangled states. The successful probabilities of our protocols approach unity in the ideal case. In addition, no need for individually addressing keeps the schemes easy to implement from the experimental point of view.