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arXiv quant-ph/0012094quant-phcond-mat
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双费米子系统中的量子关联

Quantum Correlations in Two-Fermion Systems

John Schliemann, J. Ignacio Cirac, Marek Kus, Maciej Lewenstein, Daniel Loss

摘要:

我们描述了具有2K单粒子态的两费米子系统中的量子关联并对其进行了分类。对于纯态,我们引入斯莱特分解和秩(类似于施密特分解和秩),即我们将态分解为相互正交的单粒子态形成的基本斯莱特行列式的组合。混合态可以通过它们的斯莱特数来表征,斯莱特数是生成它们所需的最小斯莱特秩。对于K=2,我们给出了一个态的斯莱特数为1的充分必要条件。我们引入了一个相关措施的混合状态,可以评估分析K=2。对于更高的K,我们提供了一种构造和优化Slater数见证人的方法,即检测Slater数的算子。

英文摘要:

We characterize and classify quantum correlations in two-fermion systems having 2K single-particle states. For pure states we introduce the Slater decomposition and rank (in analogy to Schmidt decomposition and rank), i.e. we decompose the state into a combination of elementary Slater determinants formed by mutually orthogonal single-particle states. Mixed states can be characterized by their Slater number which is the minimal Slater rank required to generate them. For K=2 we give a necessary and sufficient condition for a state to have a Slater number of 1. We introduce a correlation measure for mixed states which can be evaluated analytically for K=2. For higher K, we provide a method of constructing and optimizing Slater number witnesses, i.e. operators that detect Slater number for some states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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