Atom-number squeezing and bipartite entanglement of two-component Bose–Einstein condensates: analytical results

Atom-number squeezing and bipartite entanglement of two-component Bose–Einstein condensates: analytical results
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DOI：
10.1088/0953-4075/43/4/045301
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发表时间：
2009-12
期刊：
Journal of Physics B: Atomic, Molecular and Optical Physics
影响因子：
--
通讯作者：
G R Jin;X W Wang;D. Li;Y. W. Lu
G R Jin;X W Wang;D. Li;Y. W. Lu
中科院分区：
其他
文献类型：
--
作者：
G R Jin;X W Wang;D. Li;Y. W. Lu

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本文研究了弱约瑟夫森耦合下两组分玻色-爱因斯坦凝聚体的自旋动力学。在原子-原子排斥作用下，给出了原子数压缩和两体纠缠的解析表达式。对于吸引相互作用，不存在数压缩;然而，压缩参数对于识别薛定谔猫态的出现仍然是有用的。
We investigate spin dynamics of a two-component Bose–Einstein condensate with weak Josephson coupling. Analytical expressions of atom-number squeezing and bipartite entanglement are presented for atom–atom repulsive interactions. For attractive interactions, there is no number squeezing; however, the squeezing parameter is still useful to recognize the appearance of Schrödinger's cat state.