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arXiv 1301.3576quant-ph
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三量子比特的多体纠缠和超图态

Multipartite Entanglement and Hypergraph states of three qubits

Ri Qu, Zong-shang Li, Juan Wang, Yan-ru Bao

摘要:

使用几种纠缠度量来定义三个量子位的超图状态集中的等价类。我们的分类表明:(i)在局域幺正变换下,三个量子比特的超图态被分成六类,其中只有一类不等价于任何图态:(ii)在经典通信的随机局域操作下,对于单拷贝情形,三个量子比特的超图态被分成五类,但不能转化为W态,它们等价于图态;当考虑三个量子比特的二分纠缠时,三个量子比特的超图态被分成五类,其中只有一类具有与W态相同的纠缠图.

英文摘要:

Several entanglement measures are used to define equivalence classes in the set of hypergraph states of three qubits. Our classifications reveal that (i) under local unitary transformations, hypergraph states of three qubits are split into six classes and only one class of them is not equivalent to any graph state; (ii) under stochastic local operations with classical communication, for the single copy case hypergraph states of three qubits, partitioned into five classes which can not be converted into a W state, are equivalent to graph states; and (iii) when bipartite entanglement in three qubits considered, hypergraph states of three qubits are split into five classes and only one class of them has the same entangled graph as the W state.

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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