Detection of macroscopic entanglement by correlation of local observables.
Detection of macroscopic entanglement by correlation of local observables.
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DOI：
10.1103/physrevlett.95.090401
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发表时间：
2005-04
影响因子：
8.6
通讯作者：
A. Shimizu;T. Morimae
中科院分区：
文献类型：
--
作者：
A. Shimizu;T. Morimae
我们提出了宏观量子系统中多个位置上的局域可观测值的关联。通过测量关联，我们可以在(有效地)均匀的任意量子态中检测到宏观不同态的叠加，我们称之为宏观纠缠。利用这一性质，我们还提出了一个宏观纠缠指数。
We propose a correlation of local observables on many sites in macroscopic quantum systems. By measuring the correlation one can detect, if any, superposition of macroscopically distinct states, which we call macroscopic entanglement, in arbitrary quantum states that are (effectively) homogeneous. Using this property, we also propose an index of macroscopic entanglement.