Discussion of the entanglement classification of a 4-qubit pure state

被引：0
|
作者：
Y. Cao
A. M. Wang
机构：
[1] University of Science and Technology of China,Department of Modern Physics
来源：
The European Physical Journal D | 2007年 / 44卷
关键词：
03.65.Ud Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.); 03.67.Mn Entanglement production, characterization and manipulation; 03.05.+c Characterization and classification of entanglement;
D O I：
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中图分类号：
学科分类号：
摘要：
We classify 4-qubit pure states under the stochastic local operation and classical communication (SLOCC). There exist twenty three essentially different classes of states, giving rise to a four-graded partially ordered structure. We also give the criterion to judge which class an arbitrary 4-qubit state belongs to. We re-classify the 4-qubit pure state into 2×2×4, 4×4 aspects. Finally, we give our analysis of the classification difference of methods for the 3-qubit pure state.
引用
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页码：159 / 166
页数：7
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