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arXiv 0705.3904quant-ph
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多体量子纠缠的多重熵测度

Multiple Entropy Measures for Multipartite Quantum Entanglement

Dan Liu, Xin Zhao, Gui Lu Long

摘要:

提出了一种新的纠缠度量--多熵度量(MEMS),用于量化多体量子态的量子纠缠. MEMS是矢量状的,具有$m=[N/2]$,$N/2$的整数部分,分量:$[S_1, S_2,..., S_m]$,并且第$i$分量$S_i$是系统的$i$ -体部分熵的几何平均值。$S_i$测量系统中任意$i$体与系统其余部分纠缠的强度。微机电系统不仅物理图象透明,而且计算简单。它满足一个好的纠缠度量的条件。我们分析了微机电系统中GHZ态、W态和团簇态的纠缠特性。在微机电系统下,团簇态比GHZ态和W态具有更强的纠缠。

英文摘要:

A new entanglement measure, the multiple entropy measures (MEMS), is proposed to quantify quantum entanglement of multi-partite quantum state. The MEMS is vector-like with $m=[N/2]$, the integer part of $N/2$, components: $[S_1, S_2,..., S_m]$, and the $i$-th component $S_i$ is the geometric mean of $i$-body partial entropy of the system. The $S_i$ measures how strong an arbitrary $i$ bodies from the system are entangled with the rest of the system. The MEMS is not only transparent in physical picture, but also simple to calculate. It satisfies the conditions for a good entanglement measure. We have analyzed the entanglement properties of the GHZ-state, the W-states and cluster-states under MEMS. The cluster-state is more entangled than the GHZ-state and W-state under MEMS.

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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