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arXiv 0901.3391cond-mat.mes-hallphysics.atom-phquant-ph
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多体纠缠:全计数统计的一个新应用

Many-Body Entanglement: a New Application of the Full Counting Statistics

Israel Klich, Leonid Levitov

摘要:

纠缠熵是多体系统中各部分之间量子关联的度量,在物理学的许多领域中起着重要的作用。在这里,我们回顾了最近的工作中,这个数量和全计数统计描述的电子输运之间的关系建立了非相互作用的费米子系统。利用这个具有普遍性质的关系式,我们讨论了如何通过检测量子点接触等受驱动量子系统中的电流涨落来直接测量纠缠熵。

英文摘要:

Entanglement entropy is a measure of quantum correlations between separate parts of a many-body system, which plays an important role in many areas of physics. Here we review recent work in which a relation between this quantity and the Full Counting Statistics description of electron transport was established for noninteracting fermion systems. Using this relation, which is of a completely general character, we discuss how the entanglement entropy can be directly measured by detecting current fluctuations in a driven quantum system such as a quantum point contact.

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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