Heralded entanglement between atomic ensembles: Preparation, decoherence, and scaling
Heralded entanglement between atomic ensembles: Preparation, decoherence, and scaling
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DOI：
10.1103/physrevlett.99.180504
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发表时间：
2007-11-02
影响因子：
8.6
通讯作者：
Kimble, H. J.
中科院分区：
文献类型：
--
作者：
Laurat, J.;Choi, K. S.;Kimble, H. J.
两个原子系综中的集体激发之间的纠缠被概率地产生、存储并转换为单光子场。利用纠缠度，定量描述了纠缠随激发几率的标度行为以及导致纠缠衰减的各种关联的时间动力学.集体原子态的并发度的下限为0.9 +/-0.3。还观察到纠缠度随存储时间的衰减，并与局域动力学有关。
Heralded entanglement between collective excitations in two atomic ensembles is probabilistically generated, stored, and converted to single-photon fields. By way of the concurrence, quantitative characterizations are reported for the scaling behavior of entanglement with excitation probability and for the temporal dynamics of various correlations resulting in the decay of entanglement. A lower bound of the concurrence for the collective atomic state of 0.9 +/- 0.3 is inferred. The decay of entanglement as a function of storage time is also observed, and related to the local dynamics.